Strictly speaking silly movies on Youtube hardly have anything to do with role playing. But they can be great fun, amazing, and inspirational for wacky adventures. Have you ever wondered how lovely Mary Poppins could turn out to be scarier than the excorcist? Try this then. I can see a cool Mary of Cthulhu episode next time :-) Or how about this (slightly sick but very well made) spoof of Gladiator? Or learn how you could GM the effects of too much beer in this banned commercial... And remember, too much web surfing may be bad for your elf.