This totally reminds me an ad I saw on TV for a Panasonic camera with image stabilizer (just a P&S). I think they had a rock concert or dance club or something where the subject was moving very fast under dim lighting, and their "miracle" IS system would get you clear pictures (with the usual simulated, sharp, pictures).
Of course, we all know IS does NOTHING for exposure time, which means everything in the foreground/background should've been fairly non-blurred, while the subject should've been blurred.. LOL, just thought it was the stupidest ad ever... Though we know this kind of consumer mis-information sells.
In response to this thread, if you're on a budget, GO CANON. I would not recommend either the D50 or D70 for high ISO. Any of the current and past (20D, etc..) Canon offerings will kick both these cams in the ass. You should definitely be happy with the XTi.
You have a couple of photos that are great... you must be very good at photoshop!