It's been a while since last time I discovered something new. There's Resident Alien, but I reserve that for when I'm watching something with my GF, as she likes it too.
When I'm by myself, such as on work trips, I've started rewatching my favorites. First it was Breaking Bad. Then it was Chernobyl. I'm now rewatching The 4400 (I had forgotten how good that show was from start to finish). I think New York Undercover is next up after 4400.