I've read 1984 before, pretty good book. Also read Animal Farm, Huckleberry Finn, and some of those other cool classic books. All pretty good.
As for casual reading (I was reading all of those classics because they seemed good and I wanted to get caught up on reading classical books.) I normally read books on Neurology, programming, computers, and stuff like that. The occasional fiction book is still good too, though.
I've read 1984 once before, but in Spanish. wanted to give it a shot in English.