Hmmm, if none of those whet your whistle, then I don't know what would temp you to DX10; surely the fantasy RPG isn't on the bleeding edge of graphics demands.
none of which are on my radar at the moment. i really do restrict my gaming to fantasy crpgs. occasionally i delve into other things, but not often (i bought, and disliked, both kotors, as well as the fallouts and even planescape). i am thinking about looking at some of the horror games that are out, however, which have rather steep GPU requirements IIRC.
any more i only have a few hours each week to game, so i have to pick my battles wisely.
Still, I would be surprised if you didn't enjoy Alan Wake, and Bioshock is a SF FPS-with-RPG-elements (like System Shock).