20 Awesome TV Cameos Where A Celeb Guest Star Went On The Show Of A Fan/Friend

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Celebrity TV show cameos never get old! For example, remember when Britney Spears played herself in an epic Sabrina the Teenage Witch episode?

Melissa Joan Hart as Sabrina Spellman dances with Britney Spears

This appearance was one of the best of the '90s!

Finishing the Hat

Another great cameo was Chris Rock's guest role as a guidance counselor in the series he co-created and narrated, Everybody Hates Chris.

Chris Rock plays a guidance counselor and advises Tyler James Williams as Chris in "Everybody Hates Chris"
Chris Rock Entertainment

And Brad Pitt famously appeared on Friends alongside his then-wife, Jennifer Aniston.

Jennifer Aniston as Rachel, Lisa Kudrow as Phoebe, Brad Pitt as Will, and David Schwimmer as Ross act in a scene from the "Friends" episode, "The One With The Rumor"
Nbc / NBCUniversal via Getty Images

So many cameos are entertaining, but these 20 are even more fun to watch knowing that the celebs appeared in TV shows made by their fans or friends.

1.Frank Sinatra in Who's the Boss?

Frank Sinatra and Tony Danza act opposite each other in a "Who's the Boss?" scene

2.Taylor Swift in New Girl

Taylor Swift is seen in "Elaine's Big Day," the 2013 season finale of "New Girl"

3.Bob Hope in The Golden Girls

Bea Arthur, Betty White, Rue McClanahan, Estelle Getty, and Bob Hope are pictured on the set of "The Golden Girls"

4.The Beach Boys in Full House

The Beach Boys sing with the Tanner family in a Season 2 episode of "Full House"

5.Ed Sheeran in Game of Thrones

Ed Sheeran plays a soldier in "Game of Thrones" opposite Maisie Williams as Arya

6.Olivia Newton-John in Glee.

Olivia Newton-John and Jane Lynch as Sue Sylvester sing "Physical" in "Glee"

7.Christian Slater in The Office

Christian Slater appears in a Sabre video in "The Office," which Jim (John Krasinski) is perplexed by

8.Jesse McCartney in The Suite Life of Zack & Cody.

Brenda Song and Ashley Tisdale as London and Maddie are in awe of Jesse McCartney's vocal skills in "The Suite Life of Zack & Cody"

9.Michelle Obama in Black-ish

Michelle Obama sits at the dinner table with Dre (Anthony Anderson) and Bow (Tracee Ellis Ross) in "Black-ish"

10.Jonathan Taylor Thomas in Last Man Standing

Tim Allen and Jonathan Taylor Thomas as Mike and John meet each other in "Last Man Standing"

11.Lin-Manuel Miranda in Curb Your Enthusiasm

Lin-Manuel Miranda smiles during a meeting with Larry and Jeff in "Curb Your Enthusiasm"

12.Dolly Parton in Hannah Montana

Miley Cyrus and Dolly Parton pose on the "Hannah Montana" set while filming the episode,  "I Will Always Loathe You"

13.Leonardo DiCaprio in Saturday Night Live

Jonah Hill and Leonardo DiCaprio recreate a "Titanic" moment in Jonah's "SNL" monologue

14.Keith Hernandez in Seinfeld

Keith Hernandez talks to Jerry in his apartment in "Seinfeld"

15.Tupac in A Different World

Tupac as Piccolo and Jada Pinkett Smith as Lena talk with Lena's boyfriend, Dorian, during a dance

16.RuPaul in Broad City

Ilana Glazer as Ilana Wexler and RuPaul as Marcel chat with some coworkers in "Broad City"

17.Kesha in Jane the Virgin

Kesha as Annabelle answers the door and greets Gina Rodriguez as Jane in "Jane the Virgin"

18.David Bowie in Extras

David Bowie sits and talks with Andy Millman in "Extras"

19.Bob Dylan in Dharma & Greg

Bob Dylan smiles while holding a guitar in "Dharma & Greg"

20.B.J. Novak in The Mindy Project

B.J. Novak as Jamie and Mindy smile during a double date in "The Mindy Project"

Which of these celeb TV cameos was your favorite to watch? Let us know in the comments below!