Interview with Leonard Cohen in the Guardian. [link]
Best bit at the end:
Let me ask you about Hallelujah, because it's been an interesting year for Hallelujah - it took on a new energy. A song that you wrote in 1984, and it appeared at No 1 and No 2 on the UK charts, and your version was also in the top 40. What did you make of that?
LC: I was happy that the song was being used, of course. There were certain ironic and amusing sidebars, because the record that it came from which was called Various Positions - [a] record Sony wouldn't put out. They didn't think it was good enough. It had songs like Dancing to the End of Love, Hallelujah, If It Be Your Will. So there was a mild sense of revenge that arose in my heart. But I was just reading a review of a movie called Watchmen that uses it, and the reviewer said "Can we please have a moratorium on Hallelujah in movies and television shows?" And I kind of feel the same way. I think it's a good song, but I think too many people sing it.