I actually attended mass! Me! Seriously! It was on the main chapel (there are several) - felt quite privilege actually because the area was closed off to those not attending the mass). It was in Italian, but you could guess what they are saying. It wasn't the pope giving mass but when it ended, the big guy was actually on his pope window blessing the public and giving a speech multi-lingually. So... I've been blessed by the pope, plus I drank from a holy water fountain in St. Peter's Square.