Exactly, it's the errie feeling of connecting with a stranger in the city only to continue walking and never seeing them again.
i'd reply with something like 'woah dude what are you on right now' but it really is a strange thing about life. people are very interesting but we never get to know very many at all.
As was SP, and Ralren, and DT, and Andy. I don't think anyone Pre CS is still around but you can go back to 2006 without too much trouble.