Here’s a longer list (includes some names not listed above):
David Hallberg (Bolshoi Ballet), Dean Kamen (Segway inventor), Doris Kearns Goodwin, Francis Collins (NIH director), Garrett Reisman (astronaut), George Saunders (writer), Gloria Steinem, Grover Norquist, Jeffrey Toobin, Jimmy Wales, Neil DeGrasse Tyson, Norm Ornstein, Paul Rieckhoff
(veterans advocate), Ray Odierno (US Army Chief of Staff), Richard Clarke, Robert Pinsky, Shepard Fairey, Steven Pinker, Terry Virts (astronaut on the ISS), Trevor Potter, US forces in Afghanistan (in video);
tv and film figures Alan Alda, Andy Cohen, Big Bird, Bryan Cranston, Cookie Monster, Elijiah Wood, George Lucas, James Franco, Jeff Daniels, JJ Abrams, Jon Stewart, Ken Burns, Mandy Patankin, Patrick Stewart, Sam Waterson, Smaug, Tim Meadows, Vince Gilligan (Breaking Bad creator, in video);
news/media figures Andrew Sullivan, Arianna Huffington, Ben Howe (RedState), Bob Costas, Charlie Rose, Christiane Amanapour, Dan Savage, David Gregory, David Remnick, Emily Bazelon, Jake Tapper, Jim Cramer, Jonathan Alter, Katie Couric, Katrina vanden Heuvel, Keith Olbermann, Lesley Stahl, Matt Taibbi, Maureen Dowd, Nate Silver, Paul Krugman, Stone Phillips, Terry Gross, Tom Brokaw, Tom Friedman;
musicians Barry Manilow, Cindy Lauper, Jeff Tweedy, Jonathan Batiste, Lil’ Buck, Michael Stipe, Peter Frampton, Pussy Riot (in video), Randy Newman, Ric Ocasek, Toby Keith, Willie Nelson, Yo Yo Ma;
sports figures Alexi Lalas, Kareem Abdul-Jabbar, Mark Cuban;
politicos Andrew Young, Bill Clinton, Bill DeBlasio (Mayor, NYC), Cass Sunstein, Claire McCaskill (Sen, D-MO), Cory Booker (Sen, D-NJ), Eleanor Holmes Norton (Rep., D-DC), Eliot Spitzer (ex-gov), Henry Kissinger, Mike Huckabee (ex-gov), Samantha Power (UN Ambassabor).