How Good Are You at Trivia? | Sharapova's Thigh

What do all of these actor/actresses have in common?

James Spader
Amanda Peet
Molly Shannon
Lloyd Bridges
Ben Stein
Sarah Silverman
Cary Elwes
Janeane Garofalo
Debra Messing
Rob Schneider
Kathy Griffin
Jon Lovitz
Patton Oswalt
Judge Reinhold
Courtney Cox
Marlee Matlin
Megan Mullaly
Jeremy Piven
Mariska Hargitay
Terri Hatcher
Denise Richards

It's a little tricky, but if your a big T.V person you should be able to get it. I'm not gonna reveal it right now. Leave your guesses in the comments box and I'll reveal the answer on Friday.

Update (Thursday March 6)

Fly was right on the money, they all made guest appearances on Seinfeld.I guess that one was too easy.