10 Actors Who Guest Starred On Seinfeld Before They Were Famous
8. Megan Mullally
Megan Mullally plays George's girlfriend, Betsy, in Season 4, Episode 19, "The Implant". Although he tries to quickly deepen their relationship by going with her to her aunt's wake in Detroit, it ends there. When Betsy's brother calls George out for double dipping a chip, they get into a loud fight at the wake. This gets Betsy to break up with George.
Mullally later got famous for starring in Will and Grace and appeared in several episodes in Parks and Recreation as Tammy, Ron Swanson's crazy ex-wife.