Here's one from the What Were They Thinking? file: the Klondike Man Cave.
You remember the Klondike bar, the chocolate-dipped ice-cream treat with the cute polar-bear mascot. It was invented in the 1920s by the Isaly Dairy, near Youngstown, Ohio; until the 1970s, it was a regional brand sold only in Pennsylvania and Ohio. In 1982, the company opened a factory in Florida and began nationwide distribution. It also began a national ad campaign with the slogan "What would you do for a Klondike bar?"
The brand's current campaign is dubbed "What would you do for a Klondike bar NOW?" And the answer turns out to be: sacrifice every last shred of dignity and brand integrity.