Have you tried playing Mario, or Tetris, or any of those old school games on a phone without hardware keyboard?
That's why I like this project:
The Bluetooth Game Gripper, a game pad for your phone! by Hyrum Fairbanks PE — Kickstarter
Go be a backer you too!
I like it too, but he might be too little to late. The Playstation phone is coming out later this year...
Sony Xperia Play PlayStation Phone: Hands On | News & Opinion | PCMag.com
I like the idea though, and it would be a nice addition to my Droid, as I'm not looking to upgrade my phone for a few years.