"Macarena"
From Tardis Wiki, the free Doctor Who reference
The "Macarena" was a dance song. It was playing when Amy Pond and Rory Williams first kissed. (TV: The Girl Who Waited)
When Amy became trapped in a faster timestream and the Eleventh Doctor and Rory encountered an older version of her, the Doctor used the memory of them dancing the Macarena to synchronize the timestreams so the older Amy could be rescued too.
