During my university years (1995-99) a .wav file was widely circulated
by email and on the internet and I'd like to find & download it again.
It's lots of different (and silly) laughter put together in one file -
including the evil laugh from Thriller, Pee Wee Herman's laugh, a Mad
Cow laugh, the laughter of the guys in Mary Poppins when they laugh
themselves up to the ceiling etc. Some of it's real (as per the Mary
Poppins film one), and some of it is sound effects. It's so funny to
listen to you can't help but laugh with it.