you should call around to EVERY store that carries video games. i got mine from K-mart of all places. oh and if you do find a store that's getting some, expect to be there as the doors open, because there will be plenty of people out there who are trying to get one just like you that you'll have to beat there. that's what happened with me, this late after launch and there were still like 10 people at k-mart waiting for the Wii when i got there 20 min before opening.
we (best buy) have no idea when we get our wii's in. they ship in on their own trucks via ups, vs the best buy truck that comes twice a week (useually monday and wedensday.) some times we get em real late the night before, sumtimes round 3.pm, it could be any time. at my particular store the most we ever get is 6, every 3 or 4 weeks.