Great idea for a thread. Not a very wide spectrum of games though. This thread really only appeals to 2 to 3 types of gamers. You might want to expand to more than three (2 of your 4 are a type of shooters) categories, Shooter, Adventure, Shooter, Racing.
What about Rhythm/Music (Singstar, GH3, Rock Band), Platforming, Puzzle, Arcade, DL PSN games, Fighting, Casual, RPG, JRPG, Casual, Flight, Sports, Stategy, Simulation, and Other (ie "Eye of Judgement")
EDIT: I see you left spaces for a few of these genres. Here's 3 great references from similiar "Guide" threads (2 for the handhelds on the market, 1 for the Wii). The first and third are put together much better than the second (just from an organization standpoint), but all 3 are great tools for those looking for a guide to the best games....
http://www.neogaf.com/forum/showthread.php?t=222049 DS
http://www.neogaf.com/forum/showthread.php?t=188225 PSP
http://vgchartz.com/forum/thread.php?id=16273 Wii
Thanks for your hard work! Does anyone know of a 360 thread like this, then I will know of great reference point for all current gen consoles...