I was introduced to Discworld while in college. My friends had recommended Good Omens, which I’d read and liked, and Equal Rites was on the syllabus for the only literature class I took (Feminist Science Fiction and Fantasy, which was student-taught). Then, while I was in London to visit my dad while he was working in Scotland, I found (and bought) a copy of Witches Abroad.
Since then, I’ve read nearly everything Discworld, multiple times. But the reason I picked Discworld for the ABC-Along is that I listened to Discworld audiobooks (especially the Tiffany Aching books) a lot last fall–when I was upset enough that being alone with my thoughts was not a good situation, I’d put on a Discworld audiobook as a focus for my last thoughts before falling asleep. I still like them, and they’re also great to keep me entertained while I do the tedious bits of science, but they’ve meant more to me than that. (I should also note that, while I enjoy audiobooks, they simply don’t compare to books on paper, and I have trouble listening to books I haven’t read.)
(Those of you on Ravelry might be interested in the Ankh-Morpork Knitters’ Guild. And here’s a link to the ABC-Along group, until I manage to get the button up somewhere.)