Ebaumsworld has some hilarious videos! I definitely recommend checking it out, although you should read the video descriptions on the site before watching, especially parents. Some are disgusting, and some not suitable for children.

But here are my favorite clean ones:

Here's a reptile one.
http://media.ebaumsworld.com/snakeattack.wmv

They better have given this dog some major doggy treats!
http://media.ebaumsworld.com/smartdog.wmv

Watch out parents, a guy says the s-word, but this is really funny!
http://media.ebaumsworld.com/techtv.wmv

I'm sure everyone's seen Star Wars kid, but I still laugh everytime I see it.
http://media.ebaumsworld.com/starwarskid.wmv

I hope the ladies in these next two videos are okay, because I feel really bad laughing at them fall.
http://media.ebaumsworld.com/grapefall.wmv
http://media.ebaumsworld.com/officefall.wmv

Hang onto your teeth, Grandma!
http://media.ebaumsworld.com/skydivedent.mpg

Hope you enjoy.