Sam Wise at War

Sam Wise does some really gorgeous work on the covers of WarHammer.
From his Wiki entry:
Sam "Samwise" Didier is the art director at Blizzard Entertainment. He is responsible for creating much of the artwork for computer games in the Warcraft, StarCraft, and the Diablo series. He is the senior art director on StarCraft II.^[1] Among the veteran Blizzard employees, Didier has been a consistent artist for many years, his unique style greatly influencing the game art

Here's a killer gallery of Sam's work:
http://www.sonsofthestorm.com/gallery.php?artist=samwise