Unfortunately, relativity doesn't just prohibit matter from exceeding the speed of light--it also prohibits information from traveling faster than light.
Ideas like the Alcubierre drive rely on exotic forms of matter that have never been observed to exist. Even if those forms of matter do exist--rather a big 'if'--they may require effectively infinite energy to operate. I would love to see someone come up with a loophole that allows FTL travel, but I'm not holding my breath. Sadly, the fundamental structure of the universe appears to be against it.
