'Bennett' looks at the bright side of a legend

PBS 'American Masters' documentary captures seminal moments of singer's career.

It's hard not to love Tony Bennett -- it would be like hating enthusiasm, or disdaining laughter. The singer, who turned 81 in August and is arguably, oddly, in the prime of his career, is a kind of personified argument for life itself and the deserving subject of a ragged yet invigorating new PBS "American Masters" documentary, "Tony Bennett: The Music Never Ends," co-produced by and featuring Clint Eastwood as an interviewer. (Eastwood also plays a little jazz piano as the documentary gets underway, though, unfortunately, not behind Bennett.)