I went to the local WM (24hr.) for the DJ Hero. I was fully expecting a crowd and some shortages but, wait, nothing. Typical early (8:15am) empty Walmart. I walked right up to the display, asked an associate if they were familar with the ad (she was), and bought it. No crowds, no throwing elbows, no shortages. I'm winning!!
BTW, I was fully expecting DJ Hero to be THE hot video game accessory this Christmas but there seems to be no run on them. Good for me I guess.