Stan Lee
Neal Adams
William Shatner
Leonard Nimoy
James Doohan
George Takei
Nichelle Nichols
Walter Koenig
Jonathan Frakes
Brent Spiner
Michael Dorn
Marina Sirtis
Nana Visitor
Terry Farrell
Rene Auberjonois
Max Grodenchik
Chase Masterson
Siddig El Fadil
Tim Russ
Robert Picardo
Connor Trinneer
Alyssa Milano
Eliza Dushku
Ralph Macchio
Enos Slaughter
Steve Carlton
Red Schoendienst
Bob Gibson
Lou Brock
Keith Hernandez
Lee Smith
Matt Morris
Summer Glau
Morena Baccarin
Cal Ripken, Jr.
John Sandford
That's all I can think of at the moment. I know there's more.