Walmart had 3 left as of 30 minutes ago. Costco had maybe 30 bundles left, as follow:

1 Wii (with Wiisports remote, nunchuck, etc.)
1 copy WiiPlay (w/extra remote)
1 extra nunchuck
1 Super Mario Galaxy

for $349 (essentially getting a $20 nunchuck for free).

Hope this helps anyone still looking. To be honest I play my 360 WAY more, but I know some are still looking.