I saw some shit film years ago can't remember what it was called,but it had a theory in it that the greys or whatever other species were in fact ourselves from the future evolved through science evolution and weird space shit and had mastered time travel and dimensionism and was trying to save mankind in the past cos their heads were to far up thier own arses and had gone too far.I think it's a pretty cool theory.

I've heard that theory too (probably saw the same movie). I agree. I think it's an interesting theory.

I don't buy it. I don't think time travel backwards is possible. Every successful technology we have has an example in nature. There is no example in nature where effect precedes cause. Where something is going backwards in time while all else goes forward.

However superluminal motion has been observed, just that current physics claim it to be an illusion of angle. I don't buy the angle thing. I think thats a case of relativist trying to hang onto a theory proven wrong. Relativity is proven wrong if superluminal motion is observerd.

http://en.wikipedia.org/wiki/Messier_87

The jet from quasar galaxy m 87a demonstrates observable faster than light motion. Claim this superluminal motion as anything other than an observational illusion and physicist will slap you silly with the kook brand though.

Quntum entanglement and and the gravity dynamics of orbitol velocities suggest superluminal information transfer.

Speed limit of C is busted.

Don't quite understand your terminologys but anything is possible within the extra terrestrial realm I beleive these fuckers are definately a million times more advanced than we could probably comprehend just as we are to a flea on a mouses fur.

I disagree.
While sure they are more advanced, remember it was the greys that crashed at Roswell.
It isn't too bright not to consider every possible angle of failure. They didn't..they crashed.
There has been no indications that they are time or interdimensional travellers. From all accounts of contact I have read or heard, they are from a solar system within our galaxy.

If aliens traveled back in time to save us, would we ever actually see them? Since by saving us they would have no reason to be there in the first place?