Hockey - the Pittsburgh Penguins (hockey is also by far and away my favorite sport); quite a blessed city to get to see first Lemieux, then Jagr and Kovalev, and now Crosby, Malkin, Staal and Fleury! And don't forget those 2 Stanley Cups in 91 and 92!
Football - dem Stillers (that's Picksburgeese) (I was at the "Immaculate Reception" game with my dad in '72; and yes, you CAN be a good Orthodox and believe in the Immaculate RECEPTION!)
Baseball - regular season - the Pirates (I am old enough to remember my older brother and sister going to the World Series in 1960 and it being such a big deal; I was a junior in high school when they won it in '71 and attending a protestant seminary when Willi Stargell's "Family" won it in 1980; I have to now pick a team to root for each year in the post-season)
Basketball - the University of Pittsburgh
soccer - sorry, just never played and seldom watch it
college - Robert Morris University is in their 3rd season with a NCAA D-I men's hockey team and they are coming along quite well. Maybe in ten years they can get to a "Frozen Four"
college - otherwise, University of Pittsburgh
Oh, and I will have to root for the Colts in the Superbowl. Tony Dungy - the ex-Steeler and Chuck Noll protege. I also like Payton Manning.
Sorry , I am a very parochial, hometown guy!