When you hit Phoenix, try
Joe's Real BBQ
Actually REALLY easy to hit on your route, too. When you switch from I-10 to US-60 watch for AZ-101, you'll cross over it a few miles after you get on the 60. About that same distance again you'll come across Gilbert Rd. Get off there and head south (right turn off the highway). It's a few miles down. Yum!
Oh, and in Atlanta there's a place called "
Daddy D'z". Only been there once, but it was hella good!