15 Celebrities You Forgot Guest Starred On 7th Heaven

7th Heaven was a feel-good, family oriented show that ran for 11 seasons from 1996 to 2007, featuring rising stars like Stephen Collins, Catherine Hicks, Jessica Beil, Barry Watson, Mackenzie Rosman, David Gallagher and Beverley Mitchell, who were all apart of the Camden family. Because the show ran for so long with such a strong fan following, there were many great cameos along the way, some came at the beginning of their careers, while others were a star-studded appearance! Here’s a look at 15 celebrities you probably forgot guest starred on 7th Heaven!

15. Usher

Grammy Award winning artist Usher guest starred on 7th Heaven back in 2002, the same year he released one of his biggest singles, “U Don’t Have to Call.” His appearance was brief and only in one episode of season 7, episode 10 titled “A Cry for Help.” He played a radio station producer named Will.

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14. Aaron Carter

Aaron Carter showed up on 7th Heaven in season 9 for a two episode arc. He played the role of Harry, a boy Ruthie meets while in detention and develops a crush on. She learns he’s a foster kid who lives in a county facility, so Eric doesn’t approve of the newfound friendship. Harry and Ruthie date for a hot second until they decided they were better as friends.

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13. Mayim Bialik

Blossom alum and now one of the stars of Big Bang Theory, Mayim Bialik, scored a small role on 7th Heaven in season 7 as Cathy. She acted alongside Bradley White as a couple seeking pre-marital counseling.

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12. Mila Kunis

Mila Kunis had a four-episode arc on 7th Heaven as Lucy’s frenemy Ashley who constantly started drama in the Camden house, especially when she found out her crush didn’t share her feelings. Lucy would try to impress Ashley so she could get into the good graces of one of the popular girls at school.

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11. Gabrielle Union

Bring it On actress Gabrielle Union played the role of Keesha Hamilton, a friend of Mary’s in season 1, episode 5 of 7th Heaven. Her arc lasted for five episodes and came well before she made her fame in movies like 10 Things I Hate About You, She’s All That, and Being Mary Jane.

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10. Mary-Kate and Ashley Olsen

Not surprisingly, it was a really big deal when Mary-Kate and Ashley Olsen guest starred in season 5 of 7th Heaven. By this point these two had solidified their acting career, so this was a special treat for viewers. The famous twins appeared in the episode “Gossip” for the 100th episode anniversary as two girls Simon crushes on, Sue and Carol Murphy. They ditched their wholesome good image to play two bad apples!

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9. Leighton Meester

Gossip Girl star Leighton Meester appeared in two episodes on season 8 of 7th Heaven. Meester’s role came in the two-part finale of season 8 and was very similar to her iconic Blair Waldorf character. She played Kendall, a tutor who also ended up being love interest for Matt.

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8. Jane Lynch

Comedic actress and Hollywood Game Night host, Jane Lynch, appeared on 7th Heaven in a very subtle role as an unnamed nurse who worked with Matt for four episodes. She tried to prevent him from “looking for a wife.”

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7. Ashley Tisdale

Before she landed her gig on the Disney Channel, Tisdale had a small role on 7th Heaven as a girl who asks Simon to “go steady” with her. In the episode “Breaking Up is Hard To Do,” the curly-headed brunette tried her hardest to be in a serious relationship with Simon who clearly wasn’t ready! He got roped into a relationship with her and then didn’t know how to end things. Eventually he found a way, but it was definitely awkward!

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6. Dave Franco

One of Dave Franco’s first acting gigs before he became a big movie star was on 7th Heaven as Benjamin Bainsworth in the episode “Highway to Cell” from 2006. Bainsworth is one of Ruthie’s classmates. He finds her number and calls her to talk.

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5. Keri Russell

In the year before she hit it big with her lead role on Felicity, Keri Russell landed a small role on 7th Heaven in season 1 as Camille, a girl Mary met while in detention. Camille and Mary become friends, but she ends up being a terrible influence as she shoplifts a dress and then convinces Mary to sneak out of the house to attend a frat party.

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4. Lance Bass

The famous boy band singer didn’t need any introductions on 7th Heaven back in 2000. *NSYNC had just released their album No Strings Attached when Lance Bass played the role of Mary’s boyfriend Robbie’s brother, Rick Palmer. Mary and Robbie set Lucy up on a date with Rick so they can all go out together. We hate to admit it but Bass sported some unforgetabble frosted tips in this episode and shared a steamy kiss with Beverly Mitchell’s character, Lucy Camden, which sparked a lot of romance rumors.

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3. Katie Cassidy

Before she became widely recognized for her main role on Arrow and for her film roles in Nightmare on Elm Street and Monte Carlo, she was doing guest roles on shows like 7th Heaven! She appeared on the show in 2005 for four episodes as Zoe, a friend of Ruthie’s who confides in her that her family doesn’t have enough money for food.

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2. Kaley Cuoco

Kaley Cuoco — who is one of the biggest stars on this list — guest starred on 7th Heaven back in 2001 as Lynn, a girl who dated one of Simon’s friends. Unsurprisingly, Simon develops a crush on Lynn.

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1. Alan Thicke

A beloved face on American sitcoms, especially for his long-running show Growing Pains, Alan Thicke crossed over to another popular family show, 7th Heaven in 2001 during season 5. He appeared as Ed Palmer, an absentee father of Robbie Palmer and Bass Rick.