Ugh. We do not. But only because they show up in *every* Roddenberry endeavor: DS9, Voyager, Enterprise, Earth-Final Conflict, Andromeda....
It's as stale as the "aliens trick your mind into thinking you're on Earth so they can learn about you" gimmick.
I haven't seen much except the original series, a little DS9 and the Next Generation...maybe I just didn't get enough to get burned out. ;-)
But...I'm also someone that can watch a movie over and over and over and still enjoy it. I'm odd that way.
Actually....the Evil OverToaster is a time travel device and the Pawnshop is a CrossRoad in Time.
And then the aliens can come through the pawnshop, spacenap Guido, and trick him into thinking he's still on Earth...
My favorite was an episode of Stargate SG-1; a malfunction of the stargate forces Col. O'Neill and Teal'c to relive the same day over and over. The first several iterations they try to change events to break the loop, but nothing works. After a few hundred loops they get bored and silly with it...