Amongst tonight's stunts: Simon Cowell concocts an elaborate windup for fellow X Factor judge Louis Walsh, with a supposed audition for him to become a judge on the American series.

Joe Pasquale narrates one last hour-long special celebrating the best pranks between UK celebs, with first-hand accounts from the brains behind the pranks and the unfortunate stars who were at the receiving end.

In this final episode, Ant & Dec wind up Peter Andre by getting in his ear, Justin Timberlake gets Punk'd into thinking he owes almost a million dollars in back taxes as bailiffs arrive to seize everything he owns, and Made in Chelsea's Jamie pranks best friend Sam by turning his car into a ball pit!

Simon Cowell concocts an elaborate windup for fellow X Factor judge Louis Walsh, with a supposed audition for him to become a judge on the American series. Louis falls for it hook, line and sinker - even claiming to be able to do an American accent, if needed! Simon gets his comeuppance though in another wind-up, as he falls victim to Banzai's 'Lady One Question'.

There is also a sidesplitting wind-up in which footballer Kyle Walker pulls off a spooktacular Halloween prank on his team mates.

Celebrity commentators include presenter Ranvir Singh, The Wanted hunk Tom Parker, comedian Maria McErlane and TOWIE star Georgia Kousoulou.