From the Top Ten Most Sadistic Alarm Clocks
This digital alarm clock launches a rotor into the air that flies around the room as the alarm sounds, flying up to 9' in the air, and will not cease ringing until the rotor is returned to the alarm clock base, compelling even the most stubborn sleepers to get out of bed on time.(italics mine)
Not recommended if you have wide gaps behind heavy furniture, or one of Those Sorts of Dogs who likes to play "Keep-Away."