GameStop has a mail in form to receive a free $20 gift card by mail when you purchase Ice Age: Dawn of the Dinosaurs. Looks like it's good for any system.
Link to the various versions...
Figured I'd look for Saints Row since Amazon has Saints Row 2 on sale today. Found it for $13.98 Shipped. They seemed to have decent reviews on Pricegrabber.
http://www.consumerdepot.com/products.asp?id=752919550021&referer=srch