Games that are appealing simply because of how good they look will probably be remembered. So sorry no uncharted, gears, forza, gran turismo, etc. People will think they look like crap in the future and there goes most of their appeal.
I also don't think games with incredible stories will be remembered fondly because I'm kind of thinking stories will start vastly improving once all games approach looking like real life and developers end up having to focus on the story rather then the graphics, so no bioshock or heavy rain.
And games with massive sandbox worlds will look tiny and lifeless in the future so no fallout, elder scrolls, grand theft auto.
The games that I can think of that truely had an innovative feature this gen that could still be enjoyable many years in the future would be.
Portal
Minecraft
Braid
