Person of Interest missing. Watching again right now - awesome. Listed as science fiction for series 1 ... then as drama by series 5. Well, so it's said.
I guess Revelation Space stays speculative. It just kinda gets worse after a while. It doesn't have a lot of character continuity between books, which might help with leaving the stage open for wacky scifi concepts. (A lot of the books are really good, but Redemption Ark was meh and I found Absolution Gap disappointing.)