This is the most amazing thing I have ever seen on my PSP. I haven't played with it much but I got some time on the plane. My gaming interests are pretty specific. FPS, football and occasionally some other sports games, and strategy. I haven't had anything yet that blew me away on the PSP. NCAA 2007 does that. I am not sure if Madden 2006 was a bad port of the PS2 to the PSP but it was not a good experience in general. It had lagginess and had that notorious bug that wrecked all your presets. Occasionally I had Japanese characters pop up. How cool. Not.
NCAA 2007 is a stand alone kick ass football game. Hands down. If you haven't had the reason to get a PSP yet, and you have any interest whatsoever in sports gaming, you now have a reason. As a side note, that game registration site still isn't letting me in. Frown.