1Aug/100
An evil twist on an old idea
From OhGizmo!

This gadget is pretty evil. It's an alarm clock that won't turn off until you solve an arithmetic problem. If you're not awake enough some morning to disarm the alarm, take solace in this quote from the OhGizmo! article:
... I wouldn’t actually worry about it becoming too annoying since I’m sure it will work with that age old equation; alarm clock + wall = silence.