I must admit, the March 1987 commercial that began, "When was the last time you had lunch with a duck?," got my attention. The speaker continued, "That's right--a duck. I'll bet you think I'm crazy."
After hearing this in an AM radio air check, I thought, "Is she promoting the St. Louis Zoo or a park?"
Neither. She was promoting a condo development that contained a lake with ducks.
Admittedly, that's an unusual--but effective--selling point.