I'm currently pitching a Mage: the Awakening game. The atmosphere of the game is a cross between The Matrix and Doctor Who. Time and space can (and are) be rewritten and the only ones who notice are the PCs.
I'm also pitching a D&D4e/Changeling: the Lost game. The PCs hop between the two worlds, uncertain of which world is real. Unsure of which world they *want* to believe is real.