In the Super Mario Bros. Plumbing ad shown at the Super Bowl, the number shown is an actual phone number that can be called, giving you a voice message from Luigi. However, the movie version changes the number to a different number that doesn't lead to anything and cannot be called.
I don't think anyone even bothered to notice. I didn't even notice the first time, but I'm just now realizing. *gains stupidity and intelligence somehow both at once*
