NEW YORK - 1989: Isiah Thomas #11 of the Detroit Pistons chats with David Letterman on the David Letterman Show in New York, New York. (Photo by Nathaniel S. Butler/NBAE via Getty Images)
The Late Show With David Letterman Resumes Filming
David Letterman
David Letterman
David Letterman
David Letterman
David Letterman
David Letterman
David Letterman
FILE -- President Barack Obama appears on the "Late Show with David Letterman" in September 2012. (credit: Brendan Smialowski/AFP/Getty Images)
David Letterman
Broadway Re-Opens Following Hurricane Sandy
David Letterman
"Howard Stern's Birthday Bash" Presented By SiriusXM, Produced By Howard Stern Productions - Inside