Seinfeld: Between 1994 and 1997, Cranston played a small, recurring role of Tim Whatley, a dentist who converts to Judaism just for the jokes.
Here's a clip of Bryan Cranston's Seinfeld character:
That Thing You Do: In this 1996 Tom Hanks movie, Cranston played an uber-small part of astronaut Gus Grissom, who is interviewed moments before The Wonders perform on a live TV show.
Sabrina, the Teenage Witch: In this Season 1 episode in 1997, Cranston played a hilarious Witch Lawyer who was called in to help Sabrina get out of a marriage contract with a troll.