BBCAmerica, for those if us lucky enough to receive it, is having a 6-hour "Pythonathon" this Saturday at 9 PM. They will be showing viewer voted favorites. I'd have to say my top five all time favorites are the "Upper class twit of the year", the mouse xylophone, the incontinents race, spam (of course), and anything with a Gumby family member in it. What are you favorites?
They play it in blocks during the week as well, so I have a healthy supply on Tivo waiting for me all the time.