I think the most prominent Mandela effect I've seen recently is the infamous Hulk Hogan and Bret Hart tug-of-war over the WWF championship photo from 1993. There are people convinced they have seen it and that it was printed, but there's yet to be any proof that was the case. I think it persists because Bret is clear on when/where the photo took place, and there were WWF magazines of the period that depicted Hogan v Hart as a dream match, but nothing with a contempraneous photo of the two fighting over the belt.
