Call The Future. Set the free service up to call you or anyone else at some time and date in the future. Why? Perhaps as a reminder, or to prank someone, or to have an excuse to leave that boring party. Sounds kind of useful, in a worrying kind of way.
This tool dials a phone number and a computer voice reads off the text. The receiving phone number shows up as the CallerID field. You can set the time to any point in the future, or you can leave the time to now and it will call immediately.