Album: Life Of Brian
Label: Warner Bros.
Composer: Eric Idle

Even non-Monty Python fans know this one. It has been used and abused by many, including Eric Idle who resurrected it for "Not the Messiah (He's a Very Naughty Boy)". We got to sing it along with him during the finale at Wolf Trap in 2008. (Alternate choice was "The Scotsman", but I couldn't find a video for it.)