Since some mainline good stuff is already mentioned, I'll mention something not already said.
I enjoyed Travelers a lot. The budget constraints show at times, but it gets some very different and compelling overtones and images. The Director speaking from outside of time, one sentence at a time through different people about to die of natural causes... evocative stuff right there.
I liked Travelers but didn't see it through to the end.
There was one episode where they kept getting killed so someone had to go back and reset time until they survived that was exceptional.