I am a big fan of series. A series lets me spend more and more and more time with my fictional friends. But I also love to savor a series I'm enjoying and not read it all at once. I'm not a binge-reader (or binge-watcher). So there are quite a few series that I have read some of, but not all, but that I'm fully intending to finish. Gradually.
The Jane Austen Mystery books by Stephanie Barron (I've read 3)
The Irene Kelly books by Jan Burke (I've read 4)
The Thursday Next books by Jasper Fforde (I've read 5)
The Mother-Daughter Book Club books by Heather Vogel Frederick (I've read 2)
The Mitford and Father Tim books by Jan Karon (I've read 6 or 7)
The Zorro books by Johnston McCulley (I've read 1)
Boy Sherlock books by Shane Peacock (I've read 3)
The Lord Peter Wimsey books by Dorothy L. Sayers (I've read 1 novel and some short stories)
The Nero Wolfe books by Rex Stout (I've read more than 17)
The Jeeves books by PG Wodehouse (I've read 2 or 3)
Of course, there are quite a few series where I've read the first book and said, "Yeah, not interested in more, thanks anyway." But maybe that will be a Top Ten Tuesday subject some other time!