This was live at 1PM yesterday. Brigid watched the entire thing and said it was very moving. I only saw the first five minutes on the video yesterday evening, as he walks to the center of St. Peter's Square. I intend on seeing it in it's entirety. And here is the full text of his "Urbi et Orbi" address.
Thank you for posting as I managed to miss it despite promoting it heavily at my blog! From what I heard elsewhere, even non-Catholics and less-than-enthusiastic-fans of the pope found it very inspirational.