Snow Crash (Bantam Spectra Book)
Oh man. Funny as hell, and so well-written that I felt shamed by my own lame skills! Well, not really, but he's so good. His characters are real, his plot is brilliant, and he invents new slang while not losing the reader, since he smoothly defines the terms as he goes. Even if you aren't into the cyberpunk genre, this novel will appeal to many tastes. Get. It. Now.