The line "Imagine there's no heaven" was enough for John Lennon to <a href="http://www.examiner.com/article/john-lennon-s-imagine-fails-to-match-up-to-reality" target="_blank" target="_blank">run afoul of religious groups</a> in 1971 when he released the now iconic tune <a href="http://www.youtube.com/watch?v=DVg2EJvvlF8" target="_blank" target="_blank">"Imagine."</a>