Ahead of David Letterman's final Late Show on Wednesday, a slew of celebrities took to Twitter to congratulate the host on a legendary ride. Below is a selection of the tributes by past performers and guests, fellow comedians and others who were inspired during his 33 years.
Eric Stangel, longtime writer and producer for Letterman:
Alexi Lalas, retired U.S. soccer player:
Dan Smith of Bastille:
Kevin Feige, president of Marvel Studios: