Tom Waits by many is considered God. I am one of them. He is one of my favorites. Bone Machine and Mule Variations are my favorites by him. Try the new one too, it's quite good. Orphans.
Helly yeah! "Ice Cream Man" was one of my favorite songs in high school.
My brother's somewhat of a Tom Waits fanattic, and subconsciously I've probably pushed myself away from him just to be different, but lately I've been getting into his stuff as well. I just picked up Orphans, the cd Sasha was talking about. It's three cd's, and it's got some of his older material on it as well. Sometimes I just put those albums in my cd player and let them run all day --- it's a hell of a lot of music, but I never get bored with any of it.