Game: San Francisco 49ers @ Seattle Seahawks
Not only did this stunt piss off Seahawks fans and NFL "purists," but it changed the game! After T.O.'s Sharpie celebration, the league implemented a rule banning players from carrying "foreign objects" on the field. We prefer seeing this T.O. as opposed to the one who's broke and unemployed.
18. Terrell Owens' Sharpie Celebration