Just within the last month I've bought LOADS of new games (and a PS3 and a PSP)... so here's my "owned and not completed collection"..
N64: Zelda Ocarina of Time, Zelda Majora's Mask
GBA: Final Fantasy Tactics Advanced, Golden Sun
DS: Disgaea DS, Final Fantasy Fables: Chocobo Tales, Final Fantasy Crystal Chronicles Ring of Fates
PSP: Prinny Can I Really Be the Hero?, Final Fantasy Dissidia, Final Fantasy 7 Crisis Core, Final Fantasy Tactics
PS3: Eternal Sonata, Folklore, Infamous, Devil May Cry 4
and although I've completed the main storyline, I'm not finished with Disgaea 3 yet, and might go back to Little Big Planet for some trophies.. and want to 100% my Ratchet & Clank game too..
Won't need any more games for a while XD