http://www.quickhit.com/
It's basically a coaching sim. I read about it on ESPN.com. It uses real players and coaches such as Ray Lewis and Matt Cassell, but not NFL Teams.
You basically create your own team, and take them to town against other people online.
I haven't played it yet, but I'll get back here when I do.

At the very least, it should heal the pain of not getting Madden by just a little bit.