First off, NO SPOILERS here, I promise.
The Super Mario Bros. Movie is tremendous, a beautiful ode to all things Nintendo. Go see it, it's a great time.
One of the best parts of the movie is Bowser singing the song "Peaches", a lovely serenade for Princess Peach. Now, Jack Black has made his own video in a fantastic Bowser outfit that I really want for myself. Don't be surprised to see it at cons all over the place soon!