I Still Haven't Found What I'm Looking For
....
Actually not, but wouldn't that be sad.
Stuck in a Moment You Can't Get Out Of?
I go through phases with different songs, so it might depend on when this happened, but Always seems to have an appropriate beginning except I don't like the song nearly as much as a lot of stuff in the catalogue.
Exit...
I'm suprised nobody's said Kite....
And those are just songs that haven't been mentioned that might be fitting. What I'd really choose would be so overwhelming that I might have to go for a tiebreaker: the Beautiful Day mix that a local radio station did last October interspersed with calls of the Red Sox as we won the World Series. Uplifting song and the two loves of my life.