While some people still rely on their giant digital alarm clocks for all their dreaded snooze interruptions, the serious geeks out there have turned to the internet for their wake-up calls. If you're looking to test out the web's wakey wakey services, I suggest iPing, which is a reminder hub that keeps track of your schedule and allows you to set notifications and calls to help you get out of bed, remember birthdays, or even take your medicine. The idea is similar to setting your smartphone calendar to remind you of events, but you receive an actual phone call.
I also like WakeUpLand, an online wake-up service that allows anyone with an ordinary touch-tone phone to set wake-up calls for a small fee, and Snoozester, which provides reminder calls. The Snoozester wake-up call service is touted as a "great way to stop oversleeping and start waking up on time" because it offers features such as repeating calls, a snooze button, fun Snoozester characters, and SecureAwake, a feature for heavy sleepers that calls you every three minutes (for up to 20 minutes) until you answer the phone to indicate that you are awake. You won't have any excuse to keep the carpool waiting.