Donald O'Connor's "Make 'em Laugh" in Singin' in the Rain. Unbelievable! Just about anything by Ry Cooder. And Randy Newman. The Commitments. The Secret of Roan Innish. The Music Man. Fiddler on the Roof. Jonathan Richman's folksinger in a bar scene from Kingpin is a gas. So are the songs from Spinal Tap. The Muppet Movie. American Graffiti. The Five Heartbeats. Crossroads. Most Gene Kelly and Fred Astair films. I loved the doo-wop street singing scene in Rocky.