Need names please! I plan to eat a lot of pizza that week!
Off the top of my head, I can think of Centurion (between 2nd Ave and 3rd Ave on Roosevelt). The owner of the place is a friend of a friend. He doesn't specialize in pizza, and has a tendency to undercook the crust, but other than that, is really pretty good. In Tempe, there is Classic Italian Pizza (Just east of Rural Rd on Baseline Dr). They've been pretty good when I've been there, but judging by comments on the online reviews (and the experience of one of my coworkers), the quality can be fairly hit-or-miss.
There are several Graimaldi's in the Valley. The one I'm most familiar with is in Chandler (56th St and Ray Rd... I think...). When I took my wife there a few weeks back, she was very impressed by it, and said she'd rather eat there again than try Bianco again.
Going down a notch, there is a BJ's (chain restaurant/brewpub that makes decent deep dish pizzas) in the Chandler Fashion mall. In Tempe is the Four Peaks brewpub, which makes good (not outstanding) pizza.
I'm mostly an East Valley guy, which explains the number of places in my list that are in Tempe or Chandler. Maybe we have some *actual* Phoenecians that can recommend some places at the other end of the Valley/downtown?
Forgot to mention - for those following the thread on the American Style discussion board - there is a Mellow Mushroom in downtown Tempe.