William Shatner is coming to The Big Bang Theory, along with Kareem Abdul-Jabbar and Kevin Smith

TVLine

They'll all appear in a Dungeons & Dragons-themed episode. Shatner will make a guest appearance after saying three years ago that he turned down a Big Bang cameo because he didn't like the way it planned to use him. Joe Manganiello and Wil Wheaton are also returning for this episode.