I have a habit of sleeping through my alarm in the morning. Even if I have multiple alarms set, there's a good chance I won't wake up, but I will eventually dream about needing to turn off the damn alarm. So, as a joke, I decided to use "Non, Je Ne Regrette Rien", or the kick song from Inception. 

I found that, for some reason, that song terrifies me when I'm asleep, and I'm out of bed before it hits the second measure.