Many people have a hard time finding the humor in air travel, but for Rene Foss... it comes naturally. Foss is an aspiring actress living in New York who makes her real living as a flight attandent with Northwest Airlines. It's a job she landed after graduating from the University of Minnesota. Fourteen years later, her career provides more than a paycheck, it's also the source of her comic material for the cabaret show "Around The World in a Bad Mood" opening in Minneapolis this weekend.