For me, YouTube has been added to that long list of sites that was once essential, but is now completely unbearable. Other faves in this category: MySpace, Digg, and GoNintendo. As always, the problem is more with the users than with the content or operators of these sites.
I’ve really taken a shine to Vimeo for all of my video sharing needs. It’s much more content creator-centric (as opposed to piracy-centric), and it’s just a better user experience overall. Plus they have true HD, which is a boon for me since I’ve been shooting a lot of these time-lapse ditties with my 400D. Check the example here, or see my (skimpy) page for the HD version.