a)
newegg.com, 2 free Wiis everyday for the next 22 days.
b) Comedy Central: giving out a Wii every hour starting Thursday through Sunday of Thanksgiving weekend.
c) Pringles.com is giving away 100 Wii consoles. The program is supported by 7 million Wii-themed Pringles Snack Stacks packages and an additional 2 million Wii-themed Pringles canisters on display at Wal-Mart stores for the first three weeks of December. The sweepstakes runs now through April 16. (Nintendo Press Release)
d)7 Eleven is giving away 711 Wiis, codes printed on sides of Nintendo-branded slurpee cups.
Any other ones come up, post 'em here?