I happened to be a to the Mission Viejo mall this afternoon and there was a line of about 20-25 people outside the Apple store waiting to get their hands on the new iPad. The store was packed too. I'm interested to hear Apple's sales totals.
I went into Best Buy on launch day (for something else) and it was dead. I also went into the local Apple store early afternoon and while busy, people seemed to have no problems getting any.