I love good fantasy especially stories where strange things happen to ordinary people - Travelling Magic by Elisabeth Beresford is one of my favourites.
Hitch Hikers Guide books by D. Adams
Most of Terry Pratchett's books - kids and grown-ups books.
Anne McCaffrey books and Todd McCaffrey's.
Asimov, Heinlein, and generally funny books.
I like books with either jokes, ghosts, aliens or tiny people living in the floor boards or magic or distortions in the time-space continuum. Or all of those things for preference :)