The stars of "Mystery Science Theater 3000" are back on the big screen this holiday season with special guest "Weird Al" Yankovic! "RiffTrax: Christmas Shorts-Stravaganza! ENCORE" will rebroadcast to movie theatres nationwide on Thursday, Dec. 17. The show will be recorded live the previous night and is being rebroadcast in select theatres for this special Encore showing. Michael J. Nelson, Kevin Murphy (Tom Servo) and Bill Corbett (Crow T. Robot), now of RiffTrax.com, will zing their wisecracking commentary at a wonderfully warped collection of Christmas shorts for some much needed comic relief. Grab your friends for this one-of-a-kind hilarious holiday event! Movie theatre audiences will be treated to five free digital goodies. A URL and code will be revealed on-screen to receive your free digital goodies after the encore event. This program is not rated but should be treated as PG13.