I've wanted to read A Thousand Plateaus for a few years. The first time I tried it, all that stuff about wolves and geology just lost me. I will have to try again. Honestly, I found it harder than Heidegger's Being and Time, which I worked through while listening to Hubert Dreyfus's lectures on iTunes U a few years ago.
Whenever I read about Deleuze and Guattari I get this feeling they are on to something - I just don't know what!