5. Prince - 'Purple Rain'
Everything that Prince had been working on for years coalesced perfectly on the soundtrack to his 1984 film Purple Rain. It turned practically everybody in the country (besides Tipper Gore) into a Prince fan, and presented Michael Jackson with the first real challenger to his pop throne. He's released countless albums since, but even 27 years later nothing gets the crowd going at his shows like when he breaks out "Let's Go Crazy," "When Doves Cry" or "Purple Rain."