To Watch Tonight

What to watch as literature hooligans invade your book signing and a melee breaks out ... • MLB: New York Mets at St. Louis. Cardinals fans repeat the line we've heard on the X-Files so many times: "Mulder! I need your help!"[ ESPN] • NBA playoffs: Conference semifinals, Game 5, Cleveland at Detroit; Game 5, Dallas at San Antonio. We could watch the Cavs-Pistons series for months. And probably will . [ TNT] • NHL playoffs: Conference semifinals, Game 6, San Jose at Edmonton. Sharks looking to get back that luvin' feeling. [ OLN]