I saw there was a few listings for free stuff sites, and I thought I'd bring up this one as well:

[b][Link: phreepsps.com][/b]

One thing that's nice is that they have a few bundles, so you can get a few games while you're at it as well.

If you do join, most people suggest using the blockbuster online offer. It seems to be the easiest to deal with and cheapest.