Richard Jay Belzer is an American stand-up comedian, author, and actor. He is best known for his role as John Munch, whom he has portrayed as a regular cast member on the NBC police drama series 'Homicide: Life on the Street' and 'Law & Order: Special Victims Unit', as well as in guest appearances on a number of other series. Wikipedia*
On the C-SPAN Networks:
Richard Belzer has one video in the C-SPAN Video Library; the first appearance was a 2011 Senate Committee.