Videos are all the rage now, with several video hosting communities now very popular.
One I see coming up more and more is youtube.com
You can search for whatever you like, and there are home-made movies, funny clips, favourite moments, you name it.
Here's a great clip:
http://www.youtube.com/watch?v=Qn6MvtomrsA
Check it out, it's a awesome clip of MotoGP highlights. Even if you're not into bike racing, this is really worth a watch. Check out these guy's wheeling and 2 wheel drifting like they do it aaaaall day. You'll see Valentino Rossi feature quite a bit (number 46)
Rossi is to MotoGP what Ayrton Senna was to F1. He is the man.Youtube.com