McKay: "According to Einstein’s General Theory of Relativity, there’s nothing in the laws of physics to prevent it. Extremely difficult to achieve, mind you – you need the technology to manipulate black holes to create wormholes not only through points in space but time."
Sheppherd: "Not to mention a really nice DeLorean."
McKay: "Don’t even get me started on that movie!"
From Stargate Atlantis