Top 20 Countdown: Most Shocking is an American reality television show produced by Nash Entertainment and truTV Original Productions. The show present twenty of the most shocking clips you've ever seen. From holiday disasters to great escapes to terrible drivers, each episode counts down the most action-packed high-adrenaline stories to reveal the most outrageous video of them all. This is a spin-off series Most Shocking which began airing on October 4, 2006.