Favourite: Isaac Asimov's 'Foundation' series.
Now that was a kick-butt set of books.
Least Favourite: Dostoevsky's 'The Brothers Karamazov'
I'm sure something was lost in the translation, because that book was just pure agony to read; I literally had to force myself to read the ending, and that is something that I will regret for the rest of my life. 'The Idiot' was amusing and easy to read, but this was horrid. I take pills to help myself blot out the memories, but they don't always work; God must truly hate me to have allowed such an abomination to be read.