An excellent article
on TNT's "Inside the NBA" crew of Ernie Johnson, Kenny Smith and Charles Barkley, by ESPN's Page Two columnist Bill Simmons:
TNT built a goofy set that included a throne-type chair for Charles and a suit of armor. For the final show, there's somebody actually standing in the suit of armor -- holding a red pillow, completely still -- unbeknownst to Charles...suddenly the suit of armor drops the red pillow and reaches out to Charles, who does a quadruple-take and looks like might lose control of his bowels. Everyone breaks up laughing, including Charles. It works so well that, once the segment ends, the crew cues up the prank and watches it from five different camera angles, laughing hysterically at each take.