Which author(s) do you like enough to have read all his or her works? Are there any authors that you've enjoyed one or two of their books so much that you plan to read their whole body of work?
I'll probably leave somebody out, but here goes. As a kid, I loved Beverly Cleary and Laura Ingalls Wilder so much that I read all their books. This one may not quite fit because it had multiple authors, but I also read the whole Trixie Belden series--at least all that had been printed at the time.
As an adult, I've read all of Jane Austen's (big surprise there!), Eudora Welty's, Patricia Cornwell's, and Daniel Silva's (well, just bought his latest, but you get the idea). I've read all C. S. Lewis's novels and quite a bit of his nonfiction, but not all his works.
Oh, I've read all Harper Lee's novels. (Wink, wink.)
Some authors that I've encountered and intend to read more of are Barbara Pym, Marilynne Robinson, Jodi Picoult, Anita Shreve, Sarah Waters, and Barbara Kingsolver. I've only read one book by some of these authors--like Pym and Robinson. With others, like Picoult, Shreve, and Kingsolver, I've read quite a few of their novels, but there are still a good number yet to read.
As they say, so many books, so little time. This is a hard question. I just know I'm forgetting some great authors.