Your nerdy story of the day or something, thanks to Wilka. Researchers at the NEC Research Institute in Princeton have broken the light speed barrier by some 300 times, according to this article. With some lasers, a chamber containing cold caesium atoms and a super-fast stopwatch (heh) they created this effect

Scientists have seen a pulse of light emerge from a cloud of gas before it even entered

According to Einstein, it would never be possible to go faster than light, and right now scientists aren't even sure how this is happening. No such things as travelling back in time ever gonna happen though, but they can reduce the time between cause and effect just a little bit.

Update : euh seems Steve has posted this story a while back. I blame the BBC, or maybe Steve can travel time huh. I will never trust English people again :~(