twesterm on 17 October 2012
Uncharted (hopefully once I finish Dishonored I'll get around to finishing Uncharted 3), it's about the only thing that makes me touch my PS3 for gaming these days. Most of its other exclusives on that list don't interest me a lot and I buy multplats on the 360 (mainly because that's what most of my friends have, not entirely because I like one over the other).
Uncharted though is a fantastic series, Naughty Dog is an incredible studio, and can't wait to see what they do with The Last of Us.
-edit-
Should add that Journey and The Unfinished Swan are both pretty fantastic too, but not really franchises.
