Columbo, on NBC/ABC
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This started with a pilot in 1968, and a second pilot in 1971, before running for seven seasons, from 1971-78, on NBC. There were later another three seasons, from 1989-2003, on ABC. (The final season was a sporadic series of specials.) I've never seen any of it, but I've pretty much always been vaguely aware of the title character. I kind of thought he was a private eye, but actually he was a police detective. Anyway, it's something I'd like to see at least a bit of, someday.
Homeland, on Showtime
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I haven't seen it basically because I don't get Showtime. But even if I did, I'm not sure if it's something I would have checked out. And then I would have read or seen plenty of stuff about how great it is, and wished I had checked it out. Anyway... someday I'll probably check it out. I've always been a fan of Claire Danes, and there are other people in the show whom I've liked in other stuff. (I don't know for sure if I'd put the review under "legal dramas" or something else like "action/adventure" or "drama.")
Homicide: Life on the Street, on NBC
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I only ever got a chance to see a little of this, but I liked what I saw. So I should probably try to watch it again someday, from the beginning.
Killing Eve, on BBC America (USA) / BBC 1 (UK)
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I don't really know anything about this except that it's gotten a good reaction from critics. (And I'm not sure if this is the category where I'll put my review if I ever do see it, but for now it's my best guess.)
Street Legal, on CBC (Canada)
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This was a Canadian series about a law firm called Barr, Robinovitch and Tchobanian. I occasionally saw a bit of the show, and I remember Leon Robinovitch. I also remember quite liking Olivia Novak (played by Cynthia Dale). And I'm sure if I ever saw the show again, lots of other characters would seem familiar. But I don't really recall anything specific about plots, or anything.
The Wire, on HBO
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So, I read lots of good things about this. It was critically acclaimed, but I never got to see it, because I don't get HBO (as I may have mentioned). But I'd like to see it someday.