Talking video, Magg is a fun service to look into. Running on a service they call Dapper, they don't actually host video but merely sort video from other providers. As said before on this website, that's a clever attempt to organize contect as opposed to what all the other startups do : offering content upload and sharing. The result is a nice mix of content from all sources - you can see baby movies next to homemade porn.
You better watch closely when downloading : you don't want to shock grandma with adult stuff ;)