mpeg2? *laughs* No fucking way!
DivX / mpeg4 all the way. Or wmv, which I think is an mpeg4 variation, by my understanding.
But not rm - rm sucks for video footage if you ask me ... and quicktime has an ugly player you can't fullscreen properly. Grrr.
But yeah, put it in multiple formats? And get someone good to DivX it for us geeks.