If you happen to be in Pittsburgh anytime soon, I have a few quick thoughts to share. If you're near either of the sports stadiums (Heinz Field or PNC Park) or the Warhol Museum, I can strongly recommend Max's Allegheny Tavern, which is convenient from any of those venues. Excellent German food -- schnitzel, potato pancakes, etc. They have very good beers too.
Near PNC Park and looking for pizza? Don't. Pizza Parma and the other place near the Roberto Clemente Bridge (I have tried to purge its name from my memory) serve pizza that is less than edible.
If you're looking for food or just a nice drink in a pleasant atmosphere downtown, try the Sonoma Grille. They have a nice selection of beers and wines, and a full selection of spirits.