The Holy Grail live and in person. That is one of the funniest movies ever made.
"1, 2.. 5." "Three, Sir" "Right, 3!"
"We are the Knights who say Ni! Get thee a shrubbery."
"She turned me into a newt... I got better."
See the Marxist post linked there on the right for more Monty Python.
Yahoo! News - Lead Trio Set for Broadway-Bound Monty Python Show
If I had the money, I would travel for this show but you know tickets are going to be out the ears.