William "Bill" Maher is an American comedian, political commentator, and television host. He is well known for the HBO political talk show 'Real Time with Bill Maher' and the similar late-night show called 'Politically Incorrect', originally on Comedy Central and later on ABC. Wikipedia*
On the C-SPAN Networks:
William Maher has one video in the C-SPAN Video Library; the first appearance was a 1990 Senate Committee.