Things that keep me up at night:

× Insomnia?
× Grading papers.
× My neighbors having a screaming fit at 3a.m.
× Coffee. Lots of coffee.
× Donuts.
× Police sirens.
× Napping during the day.
× My Mom calling long distance from Russia to guilt trip me.
× World of Warcraft guild nights.
× Comic book marathons.