Goodwin, Simon: Hubble's Universe
More beautiful pictures from the HST, including an account of its purpose and history.
Malin, David: The Infinite Universe
A stunning book. Malin's photography is, as you would expect, excellent. The accompanying text perfectly complements it. Quite possibly the most beautiful astronomy book ever produced — if you're going to have one "coffee table" book, get this one!
Moore, Patrick: Fireside Astronomy
From mythology to HST discoveries to advice on greeting an alien.