U Sco has the shortest known recurrence time of any recurrent nova in our Milky Way Galaxy, and the second-shortest of all known recurrent novae. (There is a system in the nearby Andromeda Galaxy that recurs about once a year!) Because of its short recurrence time and relatively predictable time between outbursts, we have been able to study it in great detail with many different telescopes and at many different wavelengths, especially during its 2010 and 2022 outbursts. This has led to a better understanding of recurrent novae in general, as well as the discovery of some unexpected, and still unexplained, effects.