I'm surprised Pgary hasn't chimed in yet, check out his website, he keeps track of a lot of programs and good links.

http://www.freefrequentflyermiles.com/index.htm

I did a bunch of deals this year and ended up with 520KK on AA. Alas, the coin deal is termporily gone for the big purchases and Citicard has added some restrictions, but I made my 1M for Lifetime Gold.

Be careful, miles are addictive.