PSP has really good tactical RPG titles.

Tactics Ogre - Good storyline

Disgaea and Disgaea 2 - The humour is classic. It's so awesome that I admit going on YouTube just to rewatch some of the hilarious moments.

Jeanne D'Arc - The gameplay is unique, and the short movies that show in between stages are very nicely done.

The resolution of the PSP is too low to have it on full screen on a full HD TV. Might as well buy a PS3 :)