You forgot a couple:
3. A phantom roughing the kicker penalty continuing a drive that resulted in a TD.
4. A horrible non-call on Limus Sweed when, after he was forced to play defensive back due to a poor throw in the end zone, he clearly pulled the facemask of the DB. No call and the Steelers kick a 40+ yard FG to go up 16-7. If that call gets made, they're out of FG range and are forced to punt.
5. A terrible spot on 4th & 1 in the 1st quarter. I think that Polamalu had Flacco down on that QB sneak, but the whistle was never blown until Flacco twisted around and clearly go the ball up to the 1st down marker. Somehow it was spotted more than 1/2 a yard back from where it should have been. At worst, BAL would have had a long FG attempt in what was a close game at that point (either scoreless, 0-3 or 0-6).