Eggleton isn't my all-time favorite SF artist (that would be Michael Whelan) but he's certainly in the top tier. This book gives a wide overview of the best of Eggleton's work, with details on each painting, Eggleton's thoughts on art in general, and light snippets of biography. The sections are broken down into the general areas that the artist is know for - dragons, astronomy, aliens, spaceships, and horror with lots and lots of skulls - and each is equally engaging. (Though I admit to skimming through the horror work. Yeah, I'm a wuss.)
It took a while for me to notice the one major element that's missing from Eggleton's work, and that's people. I can only think of two Eggleton paintings that feature human beings in close enough detail that you can make out their faces. It's an odd subject for an someone who's primarily a cover artist to avoid, and it's never explained (or even asked) why in the book. Everything else Eggleton does, though, is so dramatic that it's easy to get lost in the pages.