Michael Weatherly debuted on TV in 1991 on one of the most renowned and revered half-hour shows of the '80s and early '90s. He played Theo's roommate in the 7th season of "The Cosby Show" in the episode "Theo's Final Final." During his short amount of screen time, the future "NCIS" star blows up a pink balloon and receives a shoulder massage. Unfortunately, Weatherly did not get the chance to develop his character beyond this brief appearance since he never acted on "The Cosby Show" again.

The up-and-coming actor transitioned from sitcoms to soaps by landing a guest gig on "Guiding Light." In 1992, Weatherly earned his first recurring role on daytime television. He portrayed Cooper Alden on the soap opera "Loving" and its sequel series, "The City."

In the late '90s, Weatherly made his foray into feature films. He got to show off his musical chops as Dean in the 1997 Rodney Dangerfield comedy "Meet Wally Sparks." Weatherly also had a small part in Whit Stillman's cerebral indie "The Last Days of Disco," released in 1998.