Conan O'Brien
George Takei
Bob Odenkirk
Leonard Nimoy
John Slattery
Dan Castellaneta
John Lithgow
William Morgan Sheppard
Christopher Darga
Tom Virtue
Bryan Cranston
Rob Riggle
Seth Rogen
Patton Oswalt
Sarah Silverman
Neil Patrick Harris
Ben Stiller
Patrick Stewart
Rob Huebel
Martin Short
Armin Shimerman
Stewart Skelton
Susan Sarandon
Jeanette Miller
Neil deGrasse Tyson
Ray Wise
Sherman Howard
Alyson Hannigan
Kevin Smith
Will Arnett
Buzz Aldrin
Evie Peck
Christopher Carroll
Stephen Root
Regis Philbin
Glenn Morshower
Mark Sheppard
Sherri Shepherd
Dan Bakkedahl
Dakin Matthews
Harry Groener
Greg Collins
Jack McBrayer
Lee Arenberg
LeVar Burton
Alex Trebek
Ed Begley Jr.
Bill Hader
Ian Abercrombie
Stephen Colbert
Brent Spiner
William Shatner
Brian George
Tony Amendola
Scott Adsit
Julia Louis-Dreyfus
Amy Hill
Tim Kelleher
Carlease Burke
Mark Hamill
Dale Raoul
Dennis Cockrum
Penn Jillette
Teller
Matt Damon
James Franco
Don Cheadle
Michael Rapaport
Harry Shearer
Richard Dawkins
Hank Azaria
Alec Baldwin
Peter Serafinowicz
Kevin McDonald
Summer Glau
Jerry Minor
Steve Martin
Jon Lovitz
Tom Hanks
Jeff Goldblum
Whoopi Goldberg
Ron Howard
Suzie Plakson
Kristen Wiig
Scott MacDonald
Keith Olbermann
Jennifer Aniston
Craig Robinson
Kelsey Grammer
Seth Green
Ken Jeong
Sarah Michelle Gellar
Richard Branson
Jeremy Roberts
Oliver Muirhead
Stephen Hawking