I was an english major, so there were definitely more than a couple of books that I've read multiple times from course overlaps. There have also been a few books I've read for pleasure more than once. Especially if it was something I read years ago and want to revisit them. Probably my most read book would be Howl's Moving Castle. It was one of my favorite books when I was a kid and now it's a guaranteed pick me up. I'm also rereading the Artemis Fowl books right now because I started working with a kid who's reading them for the first time nerding out about them with her reminded me how much I loved them when I was her age.