Celebrities Who Appeared On Seinfeld Before They Became Famous (25 pics)
You might not have noticed the first time around, but some of the biggest names in Hollywood have made appearances on "Seinfeld."
Bryan Cranston
Appeared on: "The Mom and Pop Store" (Season 6, Episode 8); four other episodes
Role on "Seinfeld": Tim Whatley, Jerry's dentist
Since "Seinfeld": Cranston starred on Fox's "Malcolm in the Middle" in the early 2000s before landing his seminal role as Walter White on AMC's "Breaking Bad."