The Mattahan theme for Firefox is in one word, different. The very unique icons of Mattahan mixed with the browsing capabilities of (and overall awesomeness) Firefox make for an excellent mix-match of style and substance.
Recently featured on a list of the top themes you have never used before, Mattahan is one of the few on the list that are definitely new to me. You can pick it up over at Deviant Art or the Firefox Add-ons web site.
