If it's not one thing it's another that keeps me from getting a full night of sleep. On the other hand, my sister's cell phone (aka her alarm clock) seems to be that thing more often than not. She has an alarm set for 7:00am every day, and yet half the time she's already up and gone downstairs or in the shower where she doesn't hear it. Instead it keeps going off and off and off and off and waking me up instead. I really really really want to smash that stupid thing.