There is a large number of video hosting sites. Right now, the most popular and user-friendly is Youtube. Other sites include Tudou, Vimeo, Vikii and Videoweed.
I think that a few of the funniest movies I have seen would be The Water Boy and The Animal. Basically movies with Adam Sander, George Lopez, Ben Stiller, Jerry Seinfeld, and mostly those stand up...
sportfactsforyou.webs.com it has cool videos you can add friends and talk to them on there listen to music and its really cool its kinda like myspace but its cool when you get to it click on members...