The stars of "Mystery Science Theater 3000" take on the cult classic "Reefer Madness" for an evening of hilarious riffing! Let RiffTrax Michael J. Nelson, Kevin Murphy and Bill Corbett bring you to a higher state of consciousness with their brand of rapid fire comedy. This event will be broadcast live to movie theaters nationwide on Thursday, Aug. 19 at 8 p.m. ET, 7 p.m. CT, 6 p.m. MT and 8 p.m. PT (tape delay). Fans will also be treated to three new shorts! Audiences will receive FREE digital goodies after the event including a downloadable short, avatars and a digital photo of the guys. A URL will be revealed on-screen at which you can receive your free digital goodies. This event is not rated but should be treated as R.