Which science fiction book you would give to a first-time SF reader?

It only takes one great science fiction or fantasy book to get someone hooked. If it's the right book, that is. When you're faced with someone who likes to read but hasn't delved much into science fiction or fantasy, what the "gateway drug" book you offer him or her? What's the best book for a newbie SF reader? » 7/22/13 2:48pm 7/22/13 2:48pm

Soar into danger, with the stunning artwork of Christopher Moore

A ship plunges boldly into the swirling eye of an event horizon, criss-crossed by a searing beam of purple light. What happens next? It's the sort of tantalizing image that leaves you dreaming — and desperate to read the book that the image adorns. » 2/16/11 12:55pm 2/16/11 12:55pm