I didn't really like that "friendly" swipe at Ronon by Sheppard when he would call Ronon Chewie (=Chewbaka from Star Wars). One could say that it was Sheppard's expression of affection for Ronon, but it could also be said to be dehumanizing. After all, no other character was labeled with a name that the audience would immediately know regarding a non-human. Poor Ronon, in all his naivite he probably had no idea what Sheppard meant by "Chewie."