1. Tom Cruise and J.Lo did a synchronized dance routine — complete with booty smacks. Christopher Polk / Getty Images Year: 2010What went down: In what might have been the most iconic dance collaboration in award show history, Tom Cruise, dressed as Les Grossman from Tropic Thunder, took the stage while rocking out to Ludacris. THEN, out of nowhere, J.Lo showed up and shit got crazy. Watch it here. 2. Sacha Baron Cohen propelled down from the ceiling and landed on Eminem’s lap. Kevin Winter / Getty Images Year: 2009What went down: Despite later revealing that it was a rehearsed stunt, Bruno, err, Sacha Baron Cohen, shocked fans when he floated down from the ceiling wearing next to nothing, straddling his legs around Eminem's face. The rapper stormed out of the show, visibly shaken.Watch it here. 3. Robert Pattinson and Taylor Lautner MADE OUT — sort of. Kevin Winter / Getty Images Year: 2011What went down: After winning the award for Best Kiss with Kristen Stewart for their steamy scenes in Twilight, Rob ran down into the audience and bombarded an innocent bystander (Taylor Lautner) with a giant smooch on the lips. Watch it here. 4. Jim Carrey showed up as a hippie and no one could tell who the hell he was. Frank Micelotta / ImageDirect Year: 1999What went down: Never one to shy away from a good prank, Jim Carrey fooled just about everyone when he arrived to the award show dressed up in complete disguise. Watch it here. 5. Rainn Wilson came out onstage naked, wearing nothing but a teddy bear. Lester Cohen / WireImage Year: 2012What went down: While presenting the award for Best Kiss alongside Megan Fox, Rainn Wilson stood tall and proud, revealing just about EVERYTHING for the world to see.Watch it here. 6. Pink, Lil' Kim, Mya, and Christina Aguilera performed "Lady Marmalade." Kevin Winter / Getty Images Year: 2001What went down: With feathers, garters, and corsets galore, four of music's most risqué ladies gave a show-stopping performance of their Moulin Rouge hit song, "Lady Marmalade." Those magical four minutes will never be forgotten. Watch it here. 7. Snoop Dogg and Kesha puffed and passed. Kevork Djansezian / Getty Images Year: 2013What went down: Staying true to his ways, Snoop Doggy Dogg presented Kesha with what ~appeared~ to be some weed. The crowd went wild when the duo had a quick smoke sesh as they announced Macklemore and Ryan Lewis's upcoming performance. Watch it here. 8. Justin Timberlake and Mila Kunis got a little handsy while presenting the award for Best Male Performance. Kevin Winter / Getty Images Year: 2011What went down: The Friends With Benefits co-stars tried to defuse dating rumors by attempting to prove that their relationship was fully platonic. Saying that they are like "brother and sister," Justin went a little too far when he held Mila's boobs claiming to feel no physical connection whatsoever. Mila's response was...OUCH.Watch it here. 9. Aubrey Plaza pulled a Kanye by running onstage to steal Will Ferrell's award for Comedic Genius. Kevork Djansezian / Getty Images Year: 2013What went down: In one of the most bizarrely awkward celebrity interactions of all time, Aubrey Plaza ran onstage to try and steal Will Ferrell's award during his acceptance speech with the title of her movie, The To Do List, scribbled on her chest. Following the odd exchange, Aubrey was escorted off the MTV Movie Awards premises and the network later confirmed that the incident was not rehearsed.Watch it here. 10. Halle Berry dared John Travolta and Hugh Jackman to ~expose themselves~. Kevin Winter / Getty Images Year: 2001What went down: While presenting the award for Best Movie, Halle Berry voiced her frustration over having to bare all in her new movie Swordfish, then daring her co-stars onstage to show some skin themselves. Lucky for us, they gladly obliged. Watch it here. 11. Jimmy Fallon felt up Sandra Bullock and picked her nose in all its glory. Kevin Winter / Getty Images Year: 2005What went down: The always-funny Jimmy Fallon convinced Sandra Bullock to dabble in some "improv comedy" by using his hands as her own. While reading from the teleprompter and trying to present the award for Best Male Performance, Jimmy picked Sandra's nose and grabbed her boobs as the audience cheered on.Watch it here. 12. Amy Schumer and Amber Rose took part in a shocking makeout sesh. Gabriel Olsen / Getty Images Year: 2015What went down: While a kiss cam panned the audience looking for cute couples, it "surprisingly" stopped on the show's host, Amy Schumer, and model Amber Rose. The two did what anyone on a kiss cam would — THEY KISSED! Things got pretty hot 'n' heavy and people were shocked beyond belief. Watch it here. 13. Mike Myers and Chris Brown had an epic dance battle. Kevin Winter / Getty Images Year: 2008What went down: After Chris Brown pressured the show's host Mike Myers to do something way more fun than just a boring opening monologue, the duo broke out into the most insane dance-off. The performance included the robot and belly rolls, among many other interesting moves.Watch it here. 14. James Franco and Seth Rogen lit up. Kevin Winter / Getty Images Year: 2008What went down: Onstage to present an award, James Franco and Seth Rogan took a quick break to light up what appeared to be some ~Mary J~. They puffed, passed, and coughed up smoke while joking about being on live television. Watch it here. 15. Lindsay Lohan ripped off her baggy clothes before performing a very Britney-esque hip-hop routine. Michael Caulfield Archive / WireImage Year: 2004What went down: To start the night off strong as host of the awards show, Lindsay Lohan opened it up with a scandalous dance performance filled with popping, locking, and A LOT of dropping while sporting a white track outfit. The camera panned to Carmen Electra who couldn't have been any more into the routine.Watch it here. 16. Will Ferrell and Sacha Baron Cohen shared a long, steamy kiss. Kevin Winter / Getty Images Year: 2007What went down: While accepting their award for Best Kiss in Talladega Nights, Will Ferrell and Sacha Baron Cohen had no choice but to lock lips as the crowd cheered on. While a simple peck would have done the job just fine, the men went into a nearly 30-second makeout session that ended with them rolling on the ground.Watch it here. 17. Reese Witherspoon went on a rant about sex tapes, naked pics, and reality shows. Kevin Winter / Getty Images Year: 2011What went down: Reese Witherspoon took her moment onstage to give advice to young women and explain that it's OK to be a "good girl." And though she didn't mention Kim Kardashian's name, she threw a pretty obvious dig at the reality star, saying that naked photos and sex tapes should be seen as embarrassing instead of cool.Watch it here. 18. Rita Ora ripped off Zac Efron's shirt to give the people (you and I) what they wanted (his abs). Frederick M. Brown / Getty Images Year: 2014What went down: While Zac Efron accepted his award for Best Shirtless Performance, a very sneaky Rita Ora ran up behind him and tore off his button-down. Instead of being embarrassed by the incident, Zac proudly removed his shirt in its entirety and flexed his tan, toned bod. DAMN DANIEL.Watch it here. 19. Andy Samberg performed “Cool Guys Don’t Look at Explosions” while making fun of action movies. Kevin Winter / Getty Images Year: 2009What went down: As host of the 2009 awards, Andy Samberg presented an epic music video that included his pals Will Ferrell and J.J. Abrams. In the short, the guys sang about cool guys in action movies who "have the nuts to walk away" from explosions. Watch it here. 20. T.A.T.U.'s performance ended with hundreds of girls kissing onstage. Robert Mora / Getty Images Year: 2003What went down: T.A.T.U. performed their mega-hit "Not Gonna Get Us" and the audience sang and danced in their seats while watching the show. That is...until the end. The routine closed with tons of girls in white underwear and tiny tops locking lips onstage, completely shocking the crowd! Go girls!Watch it here. 21. Host Conan O'Brien cut off Channing Tatum's acceptance speech by revealing a giant dick pic. Frederick M. Brown / Getty Images Year: 2014What went down: After warning the crowd that instead of orchestra music, acceptance speeches would be cut by dick pics flashing on the teleprompter, it seemed as though Channing Tatum forgot host Conan O'Brien's rule. While thanking friends and family for his Trailblazer Award, Channing was shocked to see a thankfully blurred-out photo of Conan's ~member~ onscreen, signaling for him to "wrap it up." 22. Sarah Michelle Geller and Selma Blair won Best Kiss and...well...kissed. Jim Smeal / WireImage Year: 2000What went down: Shocker! A duo that won Best Kiss...kissed?!?!?! NO WAY! Well, yes way. Sarah Michelle Geller and Selma Blair went all the way while accepting their award for their steamy scene in Cruel Intentions by re-creating the kiss.Watch it here. 23. Mark Wahlberg dropped the f-bomb multiple times while accepting the MTV Generation Award. Kevork Djansezian / Getty Images Year: 2014What went down: In a hilariously candid acceptance speech, Mark Wahlberg voiced his frustrations over receiving the MTV Generation Award. "I know what this really means. This is the 'you're too fucking old to come back' award. This is not the 'Channing Tatum, cool, you're dancing around, chicks want you' award. This is 'you're fucking done.' But you know what? It was a great run." Watch it here. 24. While Ed Helms serenaded the audience, Ken Jeong performed an interpretative dance inspired by the most underrated character in The Hangover. Christopher Polk / Getty Images Year: 2010What went down: While Ed Helms sang and keyed away, Ken Jeong channeled his inner Mr. Chow to perform "Stu's Song" from their flick, The Hangover. In full tiger-print leotard, the pair performed beautifully and had the audience nearly in tears.Watch it here. 25. Kristen Stewart, in a very Kristen Stewart way, dropped her Golden Popcorn. Kevin Mazur / WireImage Year: 2009What went down: Say it ain't so! While onstage to accept her award for Best Female Performance in Twilight, Kristin Stewart accidentally fumbled her award, dropping it on the ground before the famous crowd. A rep in charge of the Golden Popcorns later revealed that the popcorn pieces actually chipped off after the fall, resulting in them having to send Kristen an entirely new trophy.Watch it here. Don't miss The 25th Annual MTV Movie Awards on Sunday, April 10 at 8 p.m. ET/7 CT.