Buy it on: Amazon
This is the perfect gift for any die-hard Halo fan, as it's not just composed of stories that reference and relate back to Master Chief, but include numerous pieces of art. The entire graphic novel was contributed to by a variety of writers and artists who have been directly involved in the making of the game.
This creates a strong bond with the game and allows for amazing continuity between the game and the comic book. It is an incredibly easy read, and it is a gift that your friend will want to go back to consistently.