The Beatles’ Paul McCartney said Thursday that shows such as such as The Voice and American Idol are “cool” and “fascinating,” and says he watches them. He was promoting his upcoming Showtime documentary The Love We Make , which is about his post-Sept. 11 benefit concert, and uses cinema verite footage shot then by Albert Maysles, who directed Grey Gardens, among other documentaries. The film debuts Sept. 10; McCartney said, “the 10th anniversary spurred me into thinking, wait a minute, Albert took some great footage back then that we never did anything with. And it just seemed like it would be a good opportunity.” Asked about singing competition reality series, McCartney said, “I think all of that is cool because it’s what’s happening today and you always have to understand that. You know, if people want it, people are going to have it. So it’s got some value. I feel a little sorry sometimes for some of the performers because they don’t have that background. We had years before we h...