I do have Quest for Booty, but I thought pulling the PS3 HDD would have been a bit extreme. Also, I'm missing the PS2 ports of the PSP games.
I do have to agree with decoyoctopod. Up Your Arsenal and Going Commando were fantastic, and two of my favorite games ever. I was on my fourth play through of UYA (to unlock and max out everything) when I accidently saved over my file. I still haven't gotten over that.