“Unlock the Secret Cameos: Did Your Favorite Celebrities Sneak into Seinfeld?”
Piven would find success playing the no-nonsense Hollywood agent Ari Gold on HBO’s Entourage. Recently, Piven had the main role as Jeffrey Tanner on the CBS drama Wisdom of the Crowd.
Megan Mullally
Before earning a guest role, Mullally tested for the role of Elaine Benes. Ultimately, the role would be given to Julia Louis-Dreyfus. Ironically, the actress would appear as George’s girlfriend Betsy in the episode “The Implant.”
Of course, Mullally went on to have her own success with the role of the sarcastic Karen Walker on Will & Grace. Mullally is a member of the Supreme Music Program, with three albums to date.
Patton Oswalt
Oswalt made his television debut as a video store clerk in the sixth season episode “The Couch.” After writing for MADtv and starring in his own comedy special for HBO, Oswalt played Spence Olchin on The King of Queens.
In 2016, after his wife Michelle McNamara’s passing, Oswalt announced that her book I’ll Be Gone in the Dark would be published. In 2018, the Sacramento County Sheriff’s Department made an arrest on the Golden State Killer thanks to the help of that book.
Drake Bell
Bell had a small role in the episode “The Frogger” in 1998. From 1999-2002, Bell was a featured performer on The Amanda Show. A year after the show was finished, he and long-time friend Josh Peck starred in Drake & Josh.
