Love the thread. I want to throw out a correction - in Jeff City an earlier poster referred to Pizza Quick, it's actually spelled Pizza Kwik - useful because the place is a dive and could be hard to find otherwise. Really good, cheap, thin n crispy pizza.
Has anyone had the pizza at Cicero's in the Loop? It's absolutely delicious, and they have great beer and ambiance.
I recently had the pizza at the Schlafly Bottleworks, and it's really good, too. Highly recommend their BBQ pulled pork pizza, because their pulled pork is really great.
I'll also second recommendations on Pi, Black Thorn Pub, The Good Pie, Fortel's, Dewey's, and Shakespeare's in CoMo. They're all quality places, but my favorite is Cicero's pizza, even though I've only been there once.