You can hit a homerun!

This really cool NASA simulator lets you "hit" a homerun in different weather and park conditions. Just pick your ballpark (Denver, Baltimore, Cleveland, Mt. Everest, Mars, or the Moon); adjust the wind, ball speed, angle, and drag; pick your weather conditions (hot, cold, or the science geeks can pick their own weather settings); and swing away! My homerun in normal weather conditions on the moon went over 4000 feet. :-)