Speaking of the Ancients. They do like to mess with time, and I love the episode where they activate one such device and get stuck in a time loop. Perfect chance to do things you wouldn't be allowed to do. Like play golf in the gate room!
Brad Wright, one of the creators of the series, wanted to find an excuse to play golf at the stargate, and this is the episode where they made it happen. 😁
As all shows, Stargate go through their SciFi tropes (I believe it is compulsory), and this is their time loop trope episode. A very good execution of the trope, and Richard Dean Anderson gets to be extra goofy in it. 😀
They also do some fairly decent parallel universe trope episodes, which is by far my least favourite trope. Star Trek does it waaay too much.
Stargate SG-1 does their version of Star Trek's "transporter accident" trope as well. The stargate is a sort of transporter sitting on a worm hole, and Teal'c does get stuck in the memory buffer in one episode.
They also do a couple of the "beam out" at the very last second to save the day, but for most of the series, they don't have access to that technology.
@veronica Star Trek TNG had the same exact plot hole with an episode where two characters were "out of phase" (and, worse yet, they were in a starship that presumably also accelerated). Normally I don't have too much trouble suspending disbelief when consuming sci-fi, but I have to admit that that one bugged me (along with how they were breathing).