I was standing waiting for the train today (yeah, I know I should be walking home) when someone came over and said hello, asked what I was up to these days and so on. I recognized the guy's face, but couldn't remember his name or where I knew him from. I think he was at my previous job that I left 8 years ago, but i can't remember the details. I've had similar experiences a few times. I don't know if I make a bigger impression on some people than they do on me, or if I just have a lousy memory. I'm betting on the latter!