Very much. It starts as a faux-procedural, but past S1 it quickly turns into the (IMO) most accurate and reasonable portrayal of human-level artificial intelligence in the history of TV. It doesn't go any way outside present-era technology (beyond an AI running in the background, which is _the_ sci-fi element of this show). Things I particularly liked include:
- It has some great discussion and presentation of modern surveillance state issues, including predicting Snowden. That is, it actually had an NSA whistleblower before the Snowden leaks happened.
- It stays up to date with infosec topics, and uses them, instead of inventing bullshit. Among other things, the show featured Stuxnet-based exploits (with Stuxnet code dumps visible), and a successful Shellshock attack just months after the story broke.
I loved the acting, loved the story, loved the way it discussed the friendly/unfriendly AI topics, loved the humour. I was deeply saddened that it got cancelled without advance warning, and had to wrap up all the major plot points in the second half of the last season.
(Also for those who like the writing of Westworld, Person of Interest was the previous show of that team.)