These Days, Dublin night 1. I had predicted that song would get played for months before the show but when Jon announced it my jaw just dropped and I stayed like that for quite a bit.

I had that feeling many other times during the Dublin shows

EDIT: Right. Can't forget to mention getting Dry County in Las Vegas 2011. That was my first time hearing it and it was amazing, save for the drunk people next to us who tried to steal my camera...