Where do we stand on the Flux Capacitor?
Never, EVER, stand on the flux capacitor!
Some years ago there was a goofy fraud going around claiming not only that time travel was possible, but that he'd built the machine to do it, and had in fact tried it out, going back in time, then returning (presumably remembering to take along one of his devices, plus a power supply). He said (with a straight face) that it was made possible by something he called the flux capacitor. :')