I don't really think Mr. Obama is the Messiah or anything, but the music expresses my feelings at the moment.
Everything looks a little bit prettier today, somehow.
Later edit: The "he shall reign for ever and ever" part of this somehow makes it seem a completely inappropriate choice! Yes, I know about the two term limit on the presidency! Again, the song is about the Messiah, I just enjoy the joyful expression of emotion in it. I feel like a dork having posted it. It's a beautiful song, though, so I'm leaving it!