
Take a look at the stars of the seminal series "Seinfeld," then and now.

When his series premiered in 1989, Seinfeld was best known as a stand-up comic who made the rounds of the late-night shows.

Now, Seinfeld is considered an elder statesman of comedy and has a successful Web series, "Comedians in Cars Getting Coffee." An ad with former co-star Jason Alexander aired during the 2014 Super Bowl and furthered speculation that a "Seinfeld" reunion might be in the works.

Alexander couldn't have been more lovably annoying as George Costanza.

While Alexander hasn't snagged a permanent weekly gig, he is apt to show up in any number of shows, like as "Mountain Man" in an episode of "Community."

Julia Louis-Dreyfus, who played Elaine Benes, was the queen of the cast.

These days, Louis-Dreyfus is enjoying continued success with a starring role on the HBO series "Veep," which won her a Screen Actors Guild Award.

Michael Richards won fans over as Cosmo Kramer, seen here with Liz Sheridan as Helen Seinfeld.

Richards ran into some tough times in 2006 after a rant at one of his comedy shows included some racial epithets. But he has bounced back. In 2013, he could be seen on the TV Land series "Kirstie," starring Kirstie Alley.

Wayne Knight portrayed Jerry's nemesis, Newman, and "Hello Newman" became a catchphrase of the show.

Since 2011, Knight, shown here with David Alan Basche, has had a role as Haskell Lutz on the TV Land series "The Exes."

Jerry Stiller played George's long-suffering father, Frank Costanza -- a role that took his fame as a comic actor to new heights.

Stiller found more sitcom gold as Arthur Spooner on the CBS series "The King of Queens." That series ended in 2007.

Estelle Harris starred as George's mother, Estelle Costanza.

Harris has stayed busy acting and doing voice work, including roles on the animated series "Futurama" and the voice of Mrs. Potato Head in the "Toy Story" franchise.

'Seinfeld': Where are they now? —
John O'Hurley was often the butt of the joke as J. Peterman when he teamed up with Louis-Dreyfus.

'Seinfeld': Where are they now? —
O'Hurley has remained popular since the end of "Seinfeld." He was a contestant on "Dancing with the Stars" in 2005, and he was host of "Family Feud" from 2006 to 2010. He also has been host of the annual National Dog Show Presented by Purina.