Most people probably thought "Smells Like Teen Spirit" would win this poll, but the third single from Nevermind won by a pretty comfortable margin. "Lithium" is a song about a guy that turns to religion after his girlfriend dies. It soothes him, much like a dose of actual Lithium. "I've always felt that some people should have religion in their lives," Cobain told Michael Azerrad. "That's fine. If it's going to save someone, it's OK. And the person in ['Lithium'] needed it."