A little bit of help for anyone still looking for a Wii:
Look in the Target weekly ad every week. If the actual Wii console is IN the ad, the store WILL have Wiis when they open on Sunday morning.
(This is coming from a Target electronics employee, so trust me, it IS true.)
And this is true nationwide, for all Target stores. The number of Wiis may vary, but they WILL have some.