If you recognize my name then a) you are a huge nerd (my avatar might be more easily recognized?) and b) you can probably guess that my favourite author is Douglas Adams. Douglas Adams was a big fan of P.G. Wodehouse (the man behind Jeeves and Wooster), and so am I. Their writing, despite completely different subject matter, is actually quite similar. They were both experts in the use of similes and metaphors. Everyone quotes the Hitchhiker's Guide line "The ships hung in the sky in much the same way that bricks don't." For Wodehouse I think people usually offer up "She looked as if she had been poured into her clothes and had forgotten to say 'when'." (Occurs to me just now that this was stolen a bit in the movie Kiss Kiss, Bang Bang... "She poured herself into a seamless dress... from the looks of it she spilled some.") I'd put Oscar Wilde, Kurt Vonnegut and Woody Allen into the same category of clever folks. Always looking for more, but just can't find much to compare. And don't tell me Terry Pratchett. Felt like I should like it, tried it, tried it again, and I'm just not into it. But if you've got other suggestions, gimme!
Other than those two I'd have to give you a very long list. I read a lot. And I read anything. I tend to prefer great prose to sticking to a particular genre, but if I could have it both ways I suppose I like sci-fi the most. I grew up with walls of bookshelves double-stacked with sci-fi. Mostly stuff like Herbert, Heinlein, Asimov, Clarke...
Currently I'm reading Infinite Jest (have been for seemingly forever, it's non-short!), I'm halfway through the Ender's Game series (again), and I was in bed all day yesterday feeling crabby and reading some YA urban fantasy vampire crap (because I'm a horrible person and deserve to be punished? Or I'm just lazy... this summer is too hot!)