what song are you walking down the aisle to?

I've been spending a lot of time thinking about this but today i think i finally decided. one of my best friends Troy ( www.troythompson.ca ) is playing acoustic guitar and singing while our guests fill in as well as when my girls and myself walk into our venue and then while we are off doing pictures. I'm pretty sure I'm going to have him sing Jeff Buckleys Hallelujah - http://www.youtube.com/watch?v=Pid0nCrsQxM. What is everyone else using as they walk down the aisle.