Dunno if Papa's sweet, juicy pizza has made it across the pond, but it's the best around me...Were I in Chicago, on the otherhand...
/L.A
:edit: Italian pizza is also great, but hard to come by a good one around here. I'm all about the thick, bready "american" pizza though. Unless it's Italian style, if it crunches, I don't eat it. Unless I'm very hungry, of course. Because lets face it, pizza is pizza, no matter where you go, what's on it, or how thick the crust is.