1. Bonnie Bedelia & Macaulay Culkin
How they're related: Aunt/nephew
Bedelia is known for playing the matriarch of the Bravermans on NBC's Parenthood (not to mention Bruce Willis' wife in Die Hard), but in real life she's the Home Alone star's aunt. Her brother, Kit Culkin, is Macaulay's father.
2. Al Roker & Lenny Kravitz
How they're related: First cousins, once removed
The wacky Today show weatherman and the mother of the "Are You Gonna Go My Way" rocker, actress Roxie Roker, were first cousins.
3. Liev Schreiber & Pablo Schreiber
How they're related: Half-brothers
The infamous Pornstache on Orange Is the New Black shares a father with the Tony-winning star of X-Men Origins: Wolverine and Scream.
4. Gwyneth Paltrow & Katherine Moennig
How they're related: Cousins
Gwyneth's mother, Blythe Danner, is the half-sister of The L Word and Ray Donovan star's dad.
5. Lily Collins & Phil Collins
6. Robbie Amell & Stephen Amell
How they're related: Cousins
The Toronto-born heartthrobs each star in their own CW series (Robbie in The Tomorrow People and Stephen in Arrow).
7. Peyton and Eli Manning & Taryn Manning
How they're related: Second cousins
The football legends and the Orange Is the New Black star are second cousins. Taryn's father, Bill, was first cousins with Archie Manning, who was an NFL quarterback like his sons.
8. Matthew Perry & Keith Morrison
How they're related: Stepson/stepfather
The Dateline NBC host married the Friends' star's mother, Suzanne, in 1981. Keith and Suzanne went on to have four children together, who are Perry's half-siblings.
9. Melissa McCarthy & Jenny McCarthy
How they're related: First cousins
The Bridesmaids star and the co-host of The View grew up near each other in Illinois.
10. Nicolas Cage & Jason Schwartzman
How they're related: Cousins
Neither actor's last name is Coppola, but both "The King of all Memes" and the Rushmore star are members of Hollywood's successful Coppola clan.
11. Brandy and Ray J & Snoop Dogg
How they're related: Cousins
They may all be professional musicians, but it's nonetheless surprising to learn that the bubbly R&B singer and her brother are related to the rap legend.
12. Tim McGraw & Tug McGraw
How they're related: Son/father
The three-time Grammy-winning country artist thought another man was his father until he stumbled across his birth certificate when snooping for Christmas presents. He eventually developed a close relationship with his biological father, Tug, who was a two-time All-Star for the Mets and Phillies.
13. Kate Hudson & Oliver Hudson
How they're related: Siblings
Fans of the television show Nashville might be surprised to learn that the conniving record executive, Jeff Fordham, is played by none other than the brother of actress Kate Hudson.
14. Zoey Deutch & Lea Thompson
15. Mike Love & Kevin Love
How they're related: Uncle/nephew
The Beach Boys' legendary singer is the uncle of the Minnesota Timberwolves' three-time all star. Kevin's father (and Mike's brother), Stan, also played in the NBA.
16. Tom Cruise & William Mapother
How they're related: Cousins
There was a lot of weird stuff on Lost, not the least of which is the fact the creepy Dr. Ethan Rom was played by Cruise's first cousin. The two have actually appeared in five movies together.
17. Jason Sudeikis & George Wendt
How they're related: Nephew/uncle
The former Saturday Night Live star has said he realized acting was a possibility for him by watching his mother's brother play Norm ("Norm!") on the classic sitcom Cheers.