I am reading Discworld. I read the first witch book. It was great. I am now reading the first Death book. Thus far, I think I like it even more. So that's good.
I may just read them in the order I can get off of the hold lists at my library, which solves the reading order issue nicely.
I also just finished the audio book of Carry On by Rainbow Rowell. If you haven't heard of it, it's pretty crazy-meta; first, Rowell wrote a book called Fangirl about a girl who writes slash fanfiction. The universe that she writes fanfiction in was described as enough like Harry Potter to be evocative of it, but different enough to avoid any weird copyright issues. But then she decided she liked the fictional universe she had created enough to write an actual book in it. But not one of the books described in Fangirl, and not in the style of that fictional universe. But in that same universe. So...yeah. It's kind of like Rainbow Rowell wrote an A.U. last chapter fanfic for a series that doesn't actually exist except inside her head.
Also, it's really quite good. It reads a lot like some of the best Harry Potter fic I've read, which I guess makes sense! I got way more into it than I expected to and by the end liked it as much as anything I've read by her.