Fans are showing their creative side on Halloween at the Garden. Although there aren’t as many out in costume as I anticipated, those who did dress up have been hamming it up on the Jumbotron. There are the run-of-the-mill cowboys, scarecrows, and prisoners. There are also a few political impersonators. My vote for best costume was going to go to the Jackie Moon look-alike from “Semi Pro,” who sported an uncomfortably tight t-shirt and matching wig. But I changed my mind I saw the tribute to Gino in the balcony. Not only were they rocking the infamous shirt and beard, the also had the slow hip shimmy down to a science.