Re: Most gorgous bookcovers
Mark's cover art for Imperial Assassin is stunning.
And I still like (old argument, different thread) the Jody Lee covers on the US editions of Kate Elliott's books.
Some of the Kinuko Craft covers for the ACE editions of Patricia McKillip's books are amazing, so full of intricate (and significant) detail -- its almost like deciphering a code. The Tower at Stony Wood is my favorite; the more you look at it the more connections to the story you find, yet the picture is also perfectly beautiful in its right.