This looks like a good deal at Alliant Credit Union:Alliant Credit Union's Platinum Rewards VISA page
Apply by December 31, 2012, and be eligible to earn 20,000 bonus Alliant Rewards points after you make $1,000 or more in qualifying purchases during the first 90 days your account is open.
I'm not sure if 20,000 points really equals $200. Unfortunately for today's credit cards, points appear to be much more common than dollars for cash back rewards.
Refer to this blog post
for more information on Alliant and membership. Alliant makes it easy for anyone to join.