Comeback, here comes Lindsay Lohan. Again. The photo above shows LiLo on the set of Glee for her cameo in an upcoming episode — in which, like Olivia Newton John, she’ll be playing herself as one of three judges at the national choir competition. Reports are mixed about her professionalism on set, some saying she arrived for shooting with her lines memorized and others claiming she was late for her last day yesterday. One thing’s clear, however: She ain’t singing. And what a shame, too. Remember “Rumors”?