Crystal did things a little backwards on SNL. After hosting the show twice, the film star joined the series for 18 episodes. He might not have been around long, but he's left a lasting impression, giving us the now iconic phrase, "You look marvelous, darling!"

Cusack left after one season, during which she was best known for playing the awkward Salena in "The Further Adventures of Biff and Christina" skits. Since her departure, Cuscack has been in over 50 films and has been nominated for two Academy Awards. Overall, we think things worked out pretty well for her.

RDJ was one of Lorne Michaels' new cast after the producer returned to save the show. He showed off two recurring characters and many impersonations, which included George Michael, Elvis and Sean Penn. Though he was let go after one season, Downey returned as host in 1996.

As part of the disappointing and over-crowded 20th season, Elliott was one of 10 cast members not asked to return that year. Though his stint was short, Elliott was carrying on what has turned out to be a family tradition. His father appeared on an SNL Christmas episode in 1978 and his daughter Abby was a cast member for four years.

Garofalo was only on SNL for half a season before leaving, citing the "boys club" atmosphere. During her short tenure she developed no recurring characters, but showed off impressions of Hillary Clinton, Pamela Anderson, Martha Stewart and Madonna.

Gottfried barely got airtime during his 12-episode stint, something SNL writers blamed on Gottfried's decision to save his best ideas for his own stand-up. Gottfried's relationship with the writers became so contentious he was even once cast as a lifeless corpse.

Dick Ebersol cast Guest on the show only months after Spinal Tap's premiere. Unfortunately, the season was cut off when NBC canceled the series before Lorne Michaels returned to the helm and revived it. The producer decided to start fresh and didn't ask any former cast members to return.

After appearing in The Breakfast Club and Sixteen Candles Hall became SNL's youngest cast member when he joined the cast at 17. Though he had no experience in live TV or sketch comedy, Hall had two recurring characters: Craig Sundberg, Idiot Savant and Fred Jones of The Jones Brothers opposite Damon Wayans.

Koechner's working relationship with Will Ferrell started long before Anchorman. The pair became friends during Koechner's one-year stint on SNL. Though Lorne Michaels enjoyed Koechner, an NBC executive wasn't a huge fan and pressured the producer into letting him go. (He did a cameo recently during Paul Rudd's hosting appearance to plug Anchorman 2.)

Louis-Drefyus was only 21 when she joined the show and the actress had a hard time adapting to the "dog-eat-dog" and drug-fueled environment. But while the sketch show didn't work out, SNL is where she met Larry David, who was then writing for the series. It was David who later cast Louis-Dreyfus in her iconic Seinfeld role.

SNL was Metcalf's first onscreen job when she appeared for a single episode. But due to the 1981 Writer's Guild strike, the season was cut short. Metcalf went on to get her big break on Roseanne playing Jackie Harris.

After two unhappy years on SNL, Mohr literally wrote the book on trashing the series, Gasping for Airtime. The actor started as a writer before being promoted to featured player, a role he remained in for two seasons.When he wasn't promoted to repertory player he left the show and pursued a career in film.

Quaid became the first Oscar nominee to join the cast, during which time he showed off his impressions of Ed McMahon, Gregory Peck and Ronald Reagan. After being fired, Quaid returned to film before his personal legal drama led him to seek asylum in Canada.

It's not that surprising if you don't remember Riggle. His tenure was sadly overshadowed by a star-studded cast which included Amy Poehler, Tina Fey and Fred Armisen. After leaving the series, Riggle found much more success, joining The Daily Show and going on to have supporting roles in The Office, The Hangover and 21 Jump Street.

Before he was David Letterman's beloved musical sidekick, Shaffer was part of SNL's house band. Shaffer went on to appear as a featured player who relied heavily on his musical talents, evidenced by his impression of Boy George and portrayal of rock producer Don Kirshner. Shaffer also became the first cast member to say "f---" on live TV.

Silverman, who was a featured player and writer, didn't last long before being fired from the series. But the comedian doesn't blame anyone but herself for being let go. "I wrote not a single funny sketch," she later admitted.

The actor's killer Tom Cruise impression helped land Stiller a featured player spot. But his time on the show was cut short when the producers' refusal to let him make video shorts prompted his decision to leave. However, Stiller did have the chance to reprise his Cruise impression when he hosted in 1998.

Wayans, frustrated by the roles he was getting, took unauthorized creative control and decided last minute to portray a police offer in the "Mr. Monopoly" sketch as flamboyantly gay. Afterwards, Lorne Michaels fired the comedian, even though it was only halfway through the season. Wayans returned to host nearly ten years later so apparently there weren't too many hard feelings.

While she often played a simple dumb blonde type, Ebersole also showed off impressions of Princess Diana, Cheryl Teigs and more during her time on the show. Ebersole also became Brian Doyle-Murray's "Newsbreak" co-anchor before being fired.

Shearer showed off impressions of Rod Serling, Ronald Reagan and Tom Brokaw during his two stints on SNL. However, it's his voice work on The Simpsons and performance in fellow SNL alum Christopher Guest's Spinal Tap that the actor remains best known for.