I'm with the camp that thinks that playing the retro gaming card is a bit of a cop-out. Especially with anything Nintendo/Mario-related. There's about as much originality and creativity there as there is in slapping a big peace symbol on a t-shirt.
Yeah, Game Boys are great, I get it. Far be it from me to be the guy that says, "frak VIDEO GAMES AND frak VIDEO GAME MERCHANDISE," but no giant Game Boy on a shirt deserves to beat out some of these designs hovering in the top 10, much less a poorly illustrated one.