I, too, love the Hitchhiker's Guide and Tolkien.
I read A
Gentleman in Moscow several months back. I really enjoyed it.
I saw someone mention Christopher Moore.
@Mannyrules and
@PackJason turned me on to him, and I ended up sending
Lamb to my brother.
As far as favorites go, one of my all time favorites is
Pillars of the Earth. I also really enjoyed his Century Trilogy.
A funny story, at least to me, about
War and Peace. I was supposed to be born in mid October. I ended up being born about 3 weeks later, even though they tried to induce labor on my mother twice. The story goes that after the second time inducing labor didn't work, my mother told the doctor I was in there reading
War and Peace, and I wasn't gonna come out until I was finished.