Former San Francisco 49ers quarterback and bona fide NFL legend Joe Montana made an appearance at the 2013 Super Bowl in a commercial for Tide.
Montana showed up as a "miracle" stain in Tide's ad, during which a guy spills food on his white Montana Jersey and a perfect likeness of Joe's face appears.
Soon after comes the press conference, news stories and everyone making a huge deal out of it. Surprisingly, Montana did not make an actual cameo.
But it's definitely him. Take a look at the image blown up: