The former Beatle and several more pop music all-stars perform in a benefit      concert for People for the Ethical Treatment of Animals. Sarah McLachlan, The    B-52s, and Chrissie Hynde also offer some of their hits, and there are guest     appearances by dozens of animal-loving celebrities: Alec Baldwin, Jamie Lee    Curtis, Ellen DeGeneres, Elvira, Anne Heche, Martin Mull, Fred Willard, and    many more. 2000, 85 mins.