Yeasayer - "Sunrise"
Best used: During summer.
Waking up in winter is the worst. The alarm rings and you look through the window. The scene's pretty grey and about as appealing to enter into as a George Romero movie. Using "Sunrise" as an alarm during the sunny season is an excellent reminder that your wake-up could be a hell of a lot worse. It puts the wake-up in perspective, and you'll find that getting out of bed is at least a little easier.