Anyway Half LIfe 2 was right up there...we tried to do it with Black...but that game was a) a little too hard for the casual gamer and b) kind of boring for the hardcore gamer.
Anyway here's another sweet video I stole from the Kotaku Feed. The timing is classic. I guess someone used Gary's mod to create a (This Morn Omina sounding) stomp-track. check it out: