Wakerupper is a simple site with a profound service. Type in your phone number, assign a date and time, add a message that will be read via computer voice, and presto: Your phone will ring right on queue. The service can function as a universal wake-up call or a timely reminder, but we like it best as a get-out-of-jail-free card. Heading out for a first date or night on the town and want an escape, just in case? Set your robo-call, and then decide in the moment: Wrong number or medical emergency?