Later, I logged onto facebook, and a friend of mine had sent me a message. She had my phone--someone had picked it up just after I'd dropped it, and scrolled through my contacts for someone to call. He knew my friend, and called her and delivered the phone to her so she could give it back to me.
It's always nice to know that there are good, honest people. Especially since my mind went to the worst possible scenario immediately. The scariest part was that at the AT&T store, they told me that there had been a lot of stolen iPhones on campus in the past week.
This almost trumps the time I left my wallet in the backseat of a cab in NYC--I got it back about a week later WITH THE CASH STILL IN IT. I was amazed.