OK, so it's not anti-gravity, but rather Lenz's Law. As the magnet's magnetic field moves through the copper pipe a current is induced in the pipe that opposes the direction of changing magnetic field. This results in a force that opposes the motion of the magnet- making it appear to fall impossibly slow through the pipe. SCIENCE!
by HedgeHogTH,
via @rjallain
Tags: electromagnetism, Lenz's Law, magnetic field, magnets, video