My favorites are the original Pizzeria Uno in Chicago, not to be confused with the chain restaurants that are popping up everywhere. I am refering to the one on Ohio Street in River North. The chains use totally different ingredients, crust, etc, and tastes nowhere near the caliber of the original.
Another favorite would be Delorenzo's Tomato Pies on Hudson Street in Trenton. We frequent "Delo's" every Thursday night with a bottle of vino, and it is absolutely to die for.
My old favorite would have been Charlotte's in Barrington, IL which closed when I was a kid. They were located right at Route 14 (Northwest Highway) and Ela Road, and I have fond memories of the place.
All of that said, let your rants and raves begin. Who makes your favorite pie?