Ender's game was good.

Dune, I didn't read the sequels - I thought that it wasn't the best book ever by a long shot, and a lot of people hype it up a lot. I couldn't care about Paul, he seemed pretty unpleasant, and I read it mainly as a bunch of overentitled politicians taking advantage of the planet and beliefs of another race.

Tolkien bored me. He was better at writing action (imo) but didn't do much, and chapters were long and rambly.

Normally I prefer reading stuff very detached from computers etc. Jonas Jonasson wrote some humorous books (they didn't make me laugh too much, but they were enjoyable). Kate Atkinson's books have some very complex plots. They're fun to read. My favourite author is Rachel Joyce - her books are nothing particularly unique, but cover a range of topics in a sensitive and humourous way.

In terms of non-fiction, I like reading Pike's papers, even if I don't agree with everything he says, I think he's pretty good at writing and has an interesting perspective.

Peter Singer's "ethics in the real world" is a nice selection of short essays which are enjoyable to read too. They cover everything.