We just can't get enough of these Grippity back-typing keyboards, and Jacob Eichbaum dropped by the Engadget trailer one last time to show us his super-early mockup of a Grippity back-typing gaming controller, along with the original prototype that started all this insanity. Apparently they've been getting a lot of interest from manufacturers, especially with the media remote we saw the other day, so hopefully we'll see this crazy concoction hitting stores sometime this year.Gallery: Grippity