Here's one alarm clock that will survive a power outage. Boo the cat doesn't like being lonely, so he reaches under his owners' door every day at 5 a.m. to flip the doorstop thingy back and forth, jolting them awake. Why not just keep the door open? "He loves to bite people, so when he gets bored at night he bites our noses and shoulders," wrote the uploader, GarrulousCrap.
"It's going to be a sad day when your alarm doesn't go off," observed one morbid commenter, to which we can only say: Boo.