There are any number of reasons why you should definitely see Doug Wright’s production of “Good Night, Oscar” at the Goodman Theatre. Playing through April 24, the production stars Sean Hayes — famous for his role on the TV show “Will and Grace” — as Oscar Levant, the late star and acerbic wit of motion pictures, stage, television and concert halls, also known for his controversial appearance on Jack Paar’s old talk show.You could be a subscriber of Goodman Theatre and this is part of your series. You are a fan of …