The Cast of Seinfeld, Then and Now

It's been 20 years since writer-producers Larry David and Jerry Seinfeld introduced us to the "Seinfeld" cast, but the cast reunites Sunday, Oct. 4, 2009, on David's HBO comedy "Curb Your Enthusiasm," pictured left. Jerry Seinfeld is set to appear in five episodes of the Sunday night half-hour comedy, while the other main "Seinfeld" cast members -- Jason Alexander, Julia Louis-Dreyfus and Michael Richards -- will appear in four episodes. "It was eerily easy," said Julia Louis-Dreyfus of the reunion. TV Guide recently called "Seinfeld" the greatest sitcom of all time.

Here is a look at what some of the characters behind the popular show have been up to since their "Seinfeld" days.

(Columbia TriStar Television Distribution/AP Photo - Doug Hyun/HBO)