The latest Singularity trailer --- with no actual gameplay -- totally makes us wish we had one of these timey-wimey continuum-altery devices at parties. It'd be so handy for recovering spilled drinks.
Also, we'd use it to keep our dogs in perpetual states of puppydom. Hmm, come to think of it, that device would be super convenient. Somebody should make one for real -- what could be the harm?