Last month I was flipping channels before going to bed, and I happened to land on Austin City Limits. They had a re-broadcast of a concert by Tom Waits from 1978, and I was absolutely mesmerized. I had a vague familiarity with his name, but I'm pretty sure that I had never actually heard his music before.
I've now bought a few of his older albums, and highly recommend them. (Not that that anyone reading this will likely give a damn about my musical choices.) He does a mixture of blues, jazz, and other influences. It has a strong feel to me of an older period (1930's?). Great, soulful, raspy voice.