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    35 Actors Who Actually Appeared On "That '70s Show" (Some Before They Were Famous)

    Amy Adams made her first-ever TV appearance on That '70s Show as a popular cheerleader who is secretly dating Hyde.

    1. Before his more notable acting roles, Dwayne "The Rock" Johnson guest-starred on That '70s Show as his father, Rocky Johnson, when Red and Eric attend a wrestling match.

    Dwayne with an Afro as his father and a more current look

    2. Shortly before The Office began in 2005, Jenna Fischer appeared on That '70s Show as Stacy Wanamaker, whom Jackie sees as her idol because she's popular and married to a real estate agent.

    Jennifer as Stacy and holding a microphone

    3. After starring in Big Daddy in 1999, Cole Sprouse portrayed Bobby, a little kid who makes fun of Kelso after he gets lost at Funland.

    Cole as a little kid and as an adult

    4. Alongside Cole, Dylan Sprouse played Billy, Bobby's twin brother, who spits in Kelso's ice cream and tortures him too.

    Dylan with his brother and Kelso in a car and then as an adult

    5. In her first-ever TV appearance, Amy Adams played Kat Peterson, a popular cheerleader who is secretly hooking up with Hyde.

    Amy as Kat and a close-up on the red carpet

    6. Betty White guest-starred in four episodes as Bea Sigurdson, Kitty's mom and Eric's grandmother.

    Betty smiling while sitting on a couch and in a close-up

    7. A few months after Mean Girls premiered in 2004, Lindsay Lohan guest-starred on That '70s Show as Danielle, a new client at the hair salon that Fez (Wilmer Valderrama) falls for. At the time, she was also dating Wilmer in real life.

    Danielle and Fez standing together, and Lindsay smiling on a talk show

    8. While starring on 3rd Rock From the Sun and before 10 Things I Hate About You, Joseph Gordon-Levitt guest-starred on That '70s Show as Buddy Morgan, Eric's lab partner who kisses him because he thinks Eric might be gay too.

    Buddy and Eric looking at each other and Joseph sitting and holding a microphone

    9. Following The Fresh Prince of Bel-Air, James Avery guest-starred in three episodes of That '70s Show in 2004. He portrayed Officer Kennedy, who is Kelso's training officer after he joins the police force.

    Kennedy and Kelso in a police car and James smiling

    10. While starring on The O.C., Rachel Bilson appeared on That '70s Show as Christy, a rich girl who sits next to Fez at a wedding.

    Christy and Fez looking at each other and Rachel on the red carpet

    11. Bruce Willis guest-starred in an episode as Vic, the head of security at the Playboy Club in Chicago who interviews Kelso for a job. Ashton Kutcher had married Demi Moore, Bruce's ex-wife, just a few months before this episode aired.

    Vic, with a mustache and sideburns, sitting at a desk, and Bruce with a bow tie

    12. Two years after Married... With Children ended, Katey Sagal guest-starred on That '70s Show as Hyde's mom, Edna, who is the school's lunch lady. She notably runs off and leaves Hyde, which is why he moves in with the Formans.

    Katey as Edna wearing an apron and a close-up of Katey holding a microphone

    13. Seth Green guest-starred in five episodes of That '70s Show during its run. He portrayed Mitch Miller, who briefly joins the gang and has a crush on Donna, which Eric hates. Notably, Seth has worked alongside Mila Kunis on Family Guy since 1999.

    Mitch giving a peace sign and close-up of Seth on the red carpet

    14. A year after Buffy the Vampire Slayer ended, Alyson Hannigan guest-starred on That '70s Show as Suzy Simpson, a police officer in training who has a crush on Kelso, but Fez has a crush on her.

    Alyson on the show and more recently

    15. Schitt's Creek star Chris Elliott appeared on That '70s Show as Mr. Bray, Eric's high school guidance counselor, who tells Eric about the teaching program in Africa.

    Chris as Mr. Bray and onstage in a cap and hoodie

    16. Brooke Shields guest-starred in seven episodes as Pamela Burkhart, Jackie's estranged mother, who starts dating Bob, Donna's dad.

    Brooke on the show and smiling in a close-up

    17. Mary Tyler Moore guest-starred in three episodes as Christine St. George, the star of What's Up Wisconsin, who hires Jackie to work for her.

    Mary as Christine and smiling in a close-up

    18. Before starring on shows like Drake & Josh and Community, Yvette Nicole Brown appeared on That '70s Show as Sgt. Davis, a police officer who works at the jail where Hyde, Fez, and Randy are being held.

    Yvette in uniform behind a desk and smiling in a close-up

    19. Star Trek: Strange New World actor Ethan Peck appeared in two episodes of That '70s Show as a young Kelso during flashback scenes.

    Ethan on the show and on the red carpet

    20. Jessica Simpson appeared in three episodes as Annette, who is Kelso's girlfriend from California.

    Annette and Kelso on the beach and at a podium

    21. The Office star Leslie David Baker appeared on That '70s Show as a janitor working backstage at a Ted Nugent concert that Donna, Eric, Hyde, and Fez attend.

    Leslie as the janitor sweeping in the stands and smiling on the red carpet

    22. Luke Wilson showed up in six episodes as Casey, Kelso's older brother, who briefly dates Donna after she breaks up with Eric.

    As Casey and in a close-up on the red carpet

    23. The Brady Bunch star Barry Williams guest-starred on That '70s Show as Jeff, Kitty and Red's new neighbor who moves in with his husband.

    Barry on the show and smiling on the red carpet

    24. Alongside his The Brady Bunch costar, Christopher Knight appeared as Josh, Jeff's husband, who is mistaken for his brother.

    Christopher and Barry on the show and Christopher in a bow tie

    25. Buffy the Vampire Slayer and Bring It On star Eliza Dushku portrayed Sarah, who is hired at the radio station where Donna works, and the two clash.

    Eliza on the show and on the red carpet

    26. Billy Dee Williams, aka Lando Calrissian from Star Wars, showed up on That '70s Show as Pastor Dan, a pastor whom Eric and Donna go to for counseling before they get married.

    As Pastor Dan and on the red carpet

    27. Before starring on Parenthood, Erika Christensen appeared on That '70s Show as Stacey, who works at PriceMart with Red and has a crush on him.

    As Stacey and on the red carpet

    28. Way before he starred as Dan Egan on Veep, Reid Scott played Ted, a resident adviser at the University of Wisconsin who invites Hyde, Eric, Fez, and Kelso to a dorm party.

    As Ted in a jean shirt and on the red carpet in a bow tie

    29. Music legend Gloria Gaynor guest-starred in an episode as Mrs. Clark, a music teacher who cheers up Fez at prom by singing "I Will Survive."

    Gloria on the show holding a microphone and onstage holding an award

    30. Jim Gaffigan appeared in seven episodes as Roy Keene, who is Hyde's friend from a Big Brother mentor program he was in as a kid.

    Jim on the show and in a close-up

    31. While starring on Sabrina the Teenage Witch, Melissa Joan Hart guest-starred on That '70s Show as Mary, a girl who goes on a blind date with Hyde but ends up going home with Fez.

    Melissa as Mary and in a close-up

    32. Alongside her Sabrina costar, Lindsay Sloane appeared as Patty, a girl who goes on a blind date with Fez but ends up being interested in Hyde.

    Lindsay as Patty and on the red carpet

    33. Before starring on Scrubs and The Middle, Neil Flynn portrayed the bouncer at a hip new club that lets Donna, Hyde, and Fez in, but not Eric.

    Neil on the show and in a close-up

    34. Groundhog Day, Glee, and One Day at a Time star Stephen Tobolowsky appeared as Laurie's psychology professor, whom she is also sleeping with.

    On the show wearing a tie and on the red carpet, also wearing a tie

    35. And finally, Justin Long played Andrew Davis, a friend of Fez's from his home country.

    Justin as Andrew and on the red carpet