19 of the best 7th Heaven guest stars

Tara Lipinski graced 7th Heaven with her Olympic gold-winning presence in 2003. The champion figure skater played Christine in season 7's two-part finale, appearing as a teen whom the Camdens took in.

The same year that he dropped "U Don't Have to Call," Usher stopped by the set of 7th Heaven. The singer earned a credit for one 2002 episode, playing a radio station producer named Will.

The Blossom alum found a spot in 7th Heaven's seventh season as Cathy. She appeared opposite Bradley White as a part of a couple seeking pre-marital counseling.

A few years after she wrapped her run on Sister, Sister, Jackée Harry joined 7th Heaven for one 2003 episode. Her character, Ms. Beane, encountered Lucy (Beverley Mitchell) at jury duty.

Two years before he made his debut as Gilmore Girls' Logan Huntzberger, Matt Czuchry was a troubled teen named Carl in one 2002 episode of 7th Heaven.

Kaley Cuoco picked up an early role on 7th Heaven. She appeared in one 2001 episode as Lynn, an unavailable teen in whom Simon (David Gallagher) was interested.

Lance Bass earned his first on-screen acting credit thanks to 7th Heaven. Within weeks of the release of the 2000 album No Strings Attached, the *NSYNC singer played Rick Palmer, a love interest for Lucy.

Alan Thicke was a familiar face in 7th Heaven's fifth season. The actor appeared in a 2001 episode as Ed Palmer, the absentee father to Robbie Palmer (Adam LaVorgna) and Bass' Rick.

Mary-Kate and Ashley Olsen were double the trouble in 7th Heaven's fifth season. They played rebellious sisters Carol and Sue Murphy.

After hanging up his hat as Mr. Belding on Saved by the Bell, Dennis Haskins appeared in a 2003 episode of 7th Heaven. He played an unnamed traffic cop.

Years before she nabbed a gig as Gossip Girl's Blair Waldorf, Leighton Meester appeared as a tutor named Kendall in the two-part finale of 7th Heaven's eighth season.

Ashley Tisdale picked up one of her first roles on 7th Heaven in 1997. She appeared in the second season as one of Simon's first love interests, Janice.

Dave Franco's very first credited role was in a 2006 episode of 7th Heaven. The future star appeared in the 10th season as Benjamin Bainsworth, a teen who called Ruthie (Mackenzie Rosman).

Shiri Appleby landed a gig in a 1997 episode of 7th Heaven, appearing in the show's second season. She played Karen, a teenager who joined a gang.

Wayne Newton played himself in 7th Heaven's ninth season, appearing in one 2004 episode. He found his way onto the show when he made a house call at the Camdens' residence.

Aaron Carter joined 7th Heaven for two episodes in 2004. He played Harry, a boy Ruthie met in detention.

The year before Felicity hit airwaves, Keri Russell hit 7th Heaven. She appeared in the first season as Camille, whom Mary (Jessica Biel) met in detention.

Yvette Nicole Brown appeared in one 2004 episode of 7th Heaven. The Community actress was in the ninth season as Leah Morris, a woman who met Simon at a doctor's office.

Ashley Benson landed an early role as Margot on 7th Heaven. She earned credits for two 2005 episodes, playing a teen who bullied Ruthie.