Michael McDonald

You can identify Michael McDonald's baritone within seconds of hearing it. This Blue-Eyed Soulster's vocals meshed perfectly with the Doobie Brother's laidback sound, and his solo material got increasingly middle-of-the-road during the '80s and '90s. McDonald, who still looks like a condo-dwelling Grizzly Adams, ended the century on a high note: Blue Obsession may not win him any new fans, but it reminds his old ones why they liked him in the first place.