Microsoft has some cool stuff on their research page.
If you download Silverlight (link on the right side) then go to Worldwide Telescope (I ran the web client version), you can see interactive views of Earth and space. My favorite is Earth at night. There is an incredible amount of information available through this application.
"Total Eclipse of the Heart" literal video -- Lyrics redubbed to provide a commentary of what's happening in the video, which includes lots of random 80's-style weirdness.
Kiss shreds -- Lyrics and music of a live Kiss video redone to make the band sound...well, different. And by different, I mean "different". Great syncing and dubbing job.
This doohickey is fun to play with once you get the hang of it. Ask it "Why is the sky blue?" for instance, and it will tell you exactly why. The site just made its public debut, so sometimes you run into server overload.