I once had a waiter in a restaurant that I'd never been to before swear he'd seen me there many times, and when I denied it he was backed up by some of the other staff. Creepy, to say the least. Afterward I realized I should have given him my phone number and told him to call me next time "I" came in, so that I could meet my doppelganger.
I keep telling people about the movie the 13th floor. If you don't know it yet have a look, it is not something I assign any real world value to but it is one of the more interesting 'many worlds' stories.
I once had a waiter in a restaurant that I'd never been to before swear he'd seen me there many times, and when I denied it he was backed up by some of the other staff. Creepy, to say the least. Afterward I realized I should have given him my phone number and told him to call me next time "I" came in, so that I could meet my doppelganger.