The world's first TV game show, Spelling Bee, hit airwaves and screens in 1938. Since then, game shows have enthralled millions around the globe, with viewers hooked by the wit of hosts, the talent (or luck, in some cases) of contestants, and the glittering prizes on offer. But they're not always the light-hearted entertainment that they seem to be. Tempted by the prospect of winning, a handful of contestants have tried to cheat their way to the jackpot instead of playing fair. Read on to discover the five biggest game show cheats of all time and how they were caught.