Well I had one, wish I still did but Sony drove me to sell it with a lack of things to play for myself when I had it. I can tell you the games I had were mostly enjoyable.
The best was Uncharted and beyond that Hot Shots Golf has so much unlockable junk to customize with and just plain courses it lasts a LONG time. Katamari was pretty solid too, and I have Ult MvsC3 too which is good if you're into it (I wasn't really.) Uncharted was my favorite and it really holds up against the PS3 offersing quite well as it's very involving and entertaining.
About the time I got rid of it was when Gravity Rush came out so I'm not much up on the releases since but it still appears as a small shelf at the stores which is why I'm still waiting. I know from having a version of it the Rayman game would be recommended highly. If you're into console ports, those AC games and so on are worth the effort(I'm not but they're well liked.)