Telltale Games Blog has details on a special appearance by Michael J. Fox in the final episode of Back to the Future: The Game, which will be released on June 23 for Windows and OS X. They offer this trailer highlighting the appearance, along with the following explanation: "We're keeping exactly who Michael J. Fox plays a surprise for folks to discover as they play Episode 5, but I will divulge a tiny hint about one of the two characters he plays: Marty has met this character shown in the new behind the scenes video (above) in the original film series."