To me it depends on the pizza.
-Chicago deep dish - gotta go heavy......like a nice porter = Smuttynose Robust Porter
-New York Style.....foldable pizza - I'm thinking Amber or strong Lager = Great Lakes Nosferatu
-Chain (Domino's, Papa John's, etc) - need something cheap and light to go along with the cheap/light pizza - Miller Lite, Bud.
-Thin crust, designer pizza - This is where the IPA's come in. When you want to go all-in on the trendiness of the IPA's and don't want to get caught eating something that a Californian hippie wouldn't touch. = He'Brew Hop Manna IPA.......because Bell's hasn't been the same since it went all mainstream. Oh, and don't forget that it's gotta be gluten-free.....you beatnik, left-wing, free-spirit