There are a lot of candidates for Best Song in a movie this year. Diane Warren has one, so does U2. They’re each terrific. But I am a Gladys Knight fan. And Gladys has a major song in “The Butler,” written for her by Lenny Kravitz. Here they are performing it on David Letterman. If you’re in #BFCA or #HFPA, remember “You And I Ain’t Nothing No More.” If we’ve got to sit through three hour awards shows, and there’s a chance Gladys Knight can sing on them, let’s do it, kids. Great song. Great performance.