10 Actors Who Guest Starred On Seinfeld Before They Were Famous
9. Anna Gunn
Anna Gunn appeared as Jerry's girlfriend Amy in Season 5 Episode 3, "The Glasses". They're cute together until George, who isn't wearing his glasses, sees her making out with Jerry's 'horse-faced' cousin. Jerry ends the relationship, though it turns out that she was petting an actual horse, not a human.
Gunn moved on to being Bryan Cranston's on-screen wife, Skylar White, in Breaking Bad. She won an Emmy for this in 2013.