Anyone who's ever had a mental lapse will empathize with relative spring chicken Nicki Minaj, who, while accepting a BET Viewers' Choice Award, forgot why she was receiving the statuette (on live national television, no less). Or the team of astrophysicists who believed they had discovered proof of alien life--only to discover the signals were coming from the lunchroom microwave. Here's a best man forgetting to show up at the wedding, a musician leaving his priceless cello in a cab, the bank robber who wrote a holdup note on a paycheck stub that had his name and address printed on it, and the Fox studio chief who, when pressed by his leading lady to remember her name, offered ". . . Cleopatra?"