Don't worry about the problem of cooling either, because MojoPlay has seen fit to make the casing just wide enough so that it doesn't cover the cooling vents on the side of the console.
While we're sure just about anyone could find a plethora of utility in Ben Heck's LCD-equipped Xbox 360, the latest offering from Divineo (the same company which Sony loathes) slaps a 5.8-inch widescreen LCD onto the side of Microsoft's console, which actually enables gameplay right on the side of your machine.