David Letterman Remembers Robin Williams in Lengthy, Heartfelt Tribute (Video)

David Letterman, host of "The Late Show With David Letterman," remembered late comedic genius and actor Robin Williams during the Aug. 18 broadcast of his CBS show.

Watch Letterman's tribute to Williams below:

Mr. Williams starred in a number of theatrical productions, including Mike Nichols’ 1988 Off-Broadway version of Waiting for Godot, co-starring with Steve Martin; and his own one-man show, Robin Williams: Live on Broadway. In 2011 he made his acting debut on Broadway in the title role of Rajiv Joseph’s drama Bengal Tiger at the Baghdad Zoo.

Read Playbill.com's obituary for Mr. Williams here.