I re-read Dune with my 12 year old last year and was disappointed. It's dated, sexist, and the ending is a major anticlimax.
It's time to admit that I am a reading junkie. I just looked at my kindle purchase history. I have read at least 56 novels in the past year. This includes the complete works of Joe Abercrombie (a favorite), John Scalzi (always fun), Hugh Howey (fun at first but basically junk food), Justin Cronin (started out so good, boo) and almost everything by Peter F Hamilton (huge novels, always interesting, but there's an underlying conservatism that starts to bug me over time). Plus Karen Thompson Walker (very good), Chris Wooding (OK but I hoped for better), Dan Simmons (very uneven), Neal Stephenson (mostly the best ever), Eoin Colfer (always entertaining), and hey Tim Krabbe (always good but too short).
Oh yeah, and the complete Dark Tower series (really great until the Stephen King character shows up).