Started with the German CCC (Chaos Computer Club) and there project Blinkenlights
http://www.blinkenlights.de/
then the Technology House at Brown University guys did Tetris (with "The Woz")
http://bastilleweb.techhouse.org/
there have many more, laser tagging seams to be the rage.
Wonder if there needs to be a 'Hak.5' sorta like TURK182
http://www.imdb.com/video/screenplay/vi685768985/
maybe not so much with the bullets and stuff more like a kilroy thing.
Sentinal
Will Hack for Food, Sex, cause there's nothing good on tv.