Under Milk Wood

Apologies to the previous commenter, but he appears to have confused this 1992 50-minute cartoon version (which does indeed feature the voice of Richard Burton, narrating) with the 1972 movie version, whose cast, I gather, includes Burton, Elizabeth Taylor, Peter O'Toole, and a number of other well-known names.

For what it's worth, the animation in this version is beautiful, tasteful, and atmospheric, and it superbly complements Thomas's play (whose text, by the way, is considerably condensed). You could close your eyes and listen to his words alone with pleasure; you could also watch this animation with, say, the sound off and some appropriate music on, and chances are it might also be rather pleasant. Together, they make for a rewarding film.