The officiating was pretty bad. The sending off/disallowed goal was botched horribly. It's hard to say which team it really hurt more. Puyol barely made contact, if any at all, leading to Arsenal's goal. And then the ref seemed to let some Barca fouls go uncarded that looked a lot worse than fouls he booked Arsenal players for. Henry might have been the recipient of the worst yellow card I've ever seen. He blasted the ref in the postmatch interview - it will be interesting to see what happens as a result of that.
On the bandwagon since birth. Raised in the bleachers of Kyle, Olsen, and G. Rollie White