Some people think me and my bass-playing buddy Joe Hannabach look alike, and I agree to the extent we used to a little bit, but the original confusion was mostly circumstantial.
Story goes; several years ago at a fiddlers convention, I had handed off my upright bass to Joe at a jam and laid down to nurse one of my splitting headaches. Some people who had walked up to watch and listen to the jam saw Joe, and assumed it was me on bass. Joe, realizing they didn't know, and thinking it would be funny, decided to play along as me. By the end of the week, we had started switching shirts and hats and standing in with each other's bands for pictures. It kinda' became a standing joke around the musicians campground Joe and I were stunt-doubles.
A really weird coincidence though, last year at that same festival, I bumped into Joe and found out he and I also both had to have the same cervical fusion surgery. (mine was pending at the time) So now we have a matching scar too!