Yes, I saw him again. And yes, once again, could not work up the nerve to introduce myself. I need to go to Oz to get some courage, apparently.
I have now gotten THREE false leads from my missed connections post. I had googled one of them (a guy that goes to Georgetown) and found a picture of him. Oddly enough, I SAW HIM ON THE METRO THE NEXT DAY. I would have said hello, but then he would have known I google-stalked him and I generally don't like to advertise what a creep I am, haha.
Nevertheless, it was a really really strange coincidence.