When I was living in Germany, during late 1989 or early 1990, there was a club we used to go to for music and dancing. There was a rumor running around that Milli Vanilli would be playing one weekend so a bunch of us went. We were horribly disappointed that there was this one guy playing keyboards and singing. He SOUNDED like Milli Vanilli, though.
When the news broke about the lip syncing, we recognized the guy who was really doing the vocals. So we really did get to see Milli Vanilli, we just didn't know it at the time.