'Glee:' Could Patti LuPone be prom queen?

 Kidding! She doesn't even go to McKinley High. But Northport native Patti LuPone is a something of a goddess to the showrunners, and she will be on the finale. This news was sort of broken via Twitter when a fan earlier today saw LuPone filming a scene in New York.  Website TVline later said she'd be on the finale. Just a cameo...  Or maybe a full-fledged version of this...eat your heart out Rachel...