Transiting Extrasolar Giant Planets are in close proximity to their host Sun-like stars. Therefore, tidal forces may play a large role in determining the thermal and orbital evolution of these objects. At the same time, their small orbital distance implies thermal forcing from the intense stellar radiation field may induce tidal motion, or thermal tides, as well. Thermal tides always torque a given planet away from synchronous rotation, with the additional possibility of increasing its eccentricity. Dissipation of thermal and gravitational tides in these objects may explain why their inferred radii are significantly larger expected.