I'm a trophy whore, but since I bought a new gaming pc for this generation I'm not collecting trophies anymore :( I need to buy a PS4 fast and finish some stuff on the PS3! Anyway theplatinum trophies I am most proud of are:
Yakuza 3 and 4;
Metal Gear Solid 3;
Ratchet and Clank (getting all those bolts is really time consuming!)