Some fool was spamming GEH with links to his/her blog where they showed a YouTube video about Microsoft Street Slide. If they had just posted once, I wouldn't have had to ban them.

So - courtesy of a spammer - a really good link to check out:

http://research.microsoft.com/en-us/.../street_slide/

(This link doesn't go to their blog, it goes straight to the MS Research website.)