Caffeine replacement

Stand aside Starbucks Mocha Frappachino ®, there's a better wake-up call: grapefruit juice.  A hefty dose of citric acid first thing in the morning is bound to wake me up.  I found a freeware alarm program called Citrus, and a set of sounds to go with it called Lemon Juice.  The author of Citrus also wrote a web photo album generator I might have to try.  What's your caffeine replacement?