Hot Tubs have played many cameos down the years but have never had star billing. However, all that has changed with the movie, Hot Tub Time Machine. The time travelling comedy follows a group of best friends who have become bored with their adult lives, starring John Cusack. After a night of crazy drinking in a ski resort hot tub they are transported back in time - they wake up with sore heads in 1986. Cue a second chance to change their futures.