I've got Star Ocean: The Second Story and Breath of Fire III for the PS1; I guess those are fairly rare. I've got Disgaea and Suikoden III for the PS2, which aren't really that rare but are somewhat difficult to come by. And I tried to pick up Mischief Makers for the N64 about a month ago for 5 bucks, which seemed quite reasonable, but the guy at EB couldn't find it in the back of the store.