Oh, I mostly went with that because iTunes happened to play it (and it has an effect on me). I'd probably pick With or Without You above that, actually...a defining moment for me with an ex was when we were walking somewhere, and that song was playing, and he said he'd never understood it. And I was like, "Really???" Like clearly he'd never been in that sort of relationship (which I had, in college, and, really, kind of at one point in high school). Or maybe he was, but just didn't get it. We split up (my choice) a few months later.

Another option: New Year's Day. And I have a strange weakness for "In a Little While," too. OK, maybe this will be a multivolume mix tape... "Here, T, here is 24 hours worth of music to listen to. If nothing at all in here speaks to you, I will have to question your human-ness."