AMC (American Movie Classics) used to be commercial free. They updated their catalog a few years ago and went to including commercials (as bad as WTBS) a few years ago, but then along came TCM, which is always commercial free. Unless you count commercials for TCM itself in between movies. TCM movies are always completely uncut/uncensored as well, and frequently shown in letterbox and/or restored versions.
It is Ted Turner making up for his colorization sins of the 80's.
