New CBS sitcom for Fall 2008. WORST WEEK is a comedy about Sam Briggs, an entertainment magazine editor who will do anything to please his girlfriend's parents ... but instead becomes a one-man wrecking crew whenever he's around them. Sam (Kyle Bornheimer, Jericho) and his girlfriend, Melanie Clayton (Erinn Hayes, Kitchen Confidential), have only one hurdle left to clear as they start their life together: breaking the news to Mel's conservative parents that they have a…