You never know what you're going to see on some talent reality show, and that is absolutely the case more than not on "Britain's Got Talent." Recently an elderly group called 'The Zimmers' took the stage. The 80 and 90 year olds came out dressed in winter overcoats and in front of a very chagrined Simon Cowell began to sing 'What the World Needs Now.'

We won't ruin the surprise, but needless to say they won over the judges and the crowd, ending in a standing ovation.

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