Over an hour and a half, we'll go through some of the most memorable shockers over the years including when Will Young beat Gareth Gates in the first series of Pop Idol.
There's also the time Pamela Anderson popped out on Dancing on Ice and Susan Boyle's appearance on Britain's Got Talent.
Various judges from all sorts of shows will be sharing their experiences too.
20 Moments That Rocked Talent Shows, C5, 9pm
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