Behold, the most absurd piece of Star Wars fan art ever! The artist is Tyler Edlin. I have nothing else to add. Okay, I have this to add: http://starwarsblog.starwars.com/index. ... -revealed/
Speaking of Chewbacca, this is a pretty interesting read. Very thorough. George Lucas Stole Chewbacca, But It's Okay http://binarybonsai.com/2010/09/18/george-lucas-stole-chewbacca-but-its-okay/