Matt...
So far I haven't found the new Mac commercial anywhere online... but hopefully someone will upload it soon.
As far as sites with a good amount of multimedia... I *highly* recommend Nodmod's site,
Go Your Own Way (aka Fleetwood Mac - UK)... his
Audio & Video pages feature quite a few video files, and frequently updated mp3s.
He also has a wealth of great articles and pics there (among other things).
Definitely worth checking out the entire site.
Johnny Stew