Time would still be my favourite episode. Sure, they've done time travel with the gate plenty of times, but I felt that they took a classic SG element (as well as classic scifi staple) and put a different spin on it to what SG-1 and SGA ever did.
Actually, it's pretty much by the numbers and exactly the same as any and every other time travel episode done previously in Stargate and even Star Trek. The only thing that makes it different is that they didn't actually show everything reset. It just ends with everyone dead or nearly dead, and then in the next episode there all alive. Which I find annoying. That sort of thing might work for a cartoon comedy like South Park, but this is live action "gritty harsh reality." Or rather, it's pretending to be.
I don't see it that way. It was done from a different perspective where they are fully aware of what had happened in the previous loop, and have to deal with that knowledge. You have to take a pretty loose definition of a time travel episode to lump it in with every other Gate and Trek time travel episode. Usually there's either direct interaction with the time doubles, or the crew is completely unaware of any loop at all (at least until the solution). I guess Moebius has similarities in that video was sent from one timeline to another for direct observation, but it was only a minor plot point to cover ground, whereas in Time it was the framing device of most of the episode.
I don't know, I'm not saying it was completely innovative or original, but they definitely managed to make it feel fresh again to me.
I did find it annoying that the plot wasn't finished off within the episode and the rest was assumed off screen, but I don't think it detracted from the usual level of grittiness SGU goes for.