William Mills "Bill" Irwin is an American actor, clown, and comedian. He began as a vaudeville-style stage performances and has been noted for his contribution to the renaissance of American circus during the 1970s. He has also made a number of appearances on film and television, and he won a Tony Award for his role in 'Who's Afraid of Virginia Woolf' on Broadway. Wikipedia*
On the C-SPAN Networks:
Bill Irwin has one video in the C-SPAN Video Library; the first appearance was a 2006 Public Affairs Event.