Rachael with Target shoppers during 'Oprah's Big Give.'

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Rachael's first stop is at Target, where she recruits 20 unsuspecting customers for a Big Give shopping spree. "You have five minutes to get $500 worth of stuff in your cart," she says. "Are we ready? Get set. Go!"

Carts fly as the shoppers grab as much merchandise as they can. Five minutes later, Rachael has spent $10,000 of her cash.