Anyone figured out the Rozerem riddle yet?

I know we’ve written about this before, but I happened to be visiting the Abraham Lincoln Presidential Library in Springfield, Ill., yesterday, and wondered again what on earth our 16th president and a beaver are doing chatting with the insomniac in the ads for Rozerem, a sleeping pill. In comments to the earlier item, we got some theories. Dredpiraterobts writes: “The Beaver represents work … he worries about the job. Lincoln represents Money, been known to keep people awake or even waken them from a deep sleep at 3:00 sharp! The chess board I’m not sure about, nor am I sure about the Naut in the suit in the background (he may be an aqua or an astro naut).