One of the best free events in the summer is Shakespeare in the Park. The outdoor Delacorte Theatre is home to this event. Although it is a pain to get up early to line up for tickets on the weekends, this high demand show is well worth the 5 hours in line. Definitely go earlier during the week when there are less people. They have two locations to line up for tickets: Central Park and Astor Place. There are more tickets at Central Park I think. You can only get same day tickets and so if you are rained out, it’s too bad for you. There are two different productions each summer. I watched As You Like It and it was fantastic. The actors are very professional and they make use of the stage and outdoor environment.