IF you got no way to get to the airport or have a early flight when you travel and live in the Tampa Bay area, Bay Area Shuttle is the way to go. I have been taking this for years. THey are fast, reliable, and have a great service. it surely beats taking the cab or bugging your friends to carry you to the airport for those early morning flights. In addition, they have very friendly drivers.
THe only downfall, it picks you up about 2.5-3 hours earlier than your flight.