Hollywood actor Michael Clarke Duncan is supporting a new PETA campaign promoting vegetarianism.

The Green Mile star gave up meat three years ago and features in a new ad for the charity under the slogan 'I am Michael Clarke Duncan, and I Am a Vegetarian'. He joins a growing list of celebrities including Pamela Anderson, Sir Paul McCartney and Joss Stone who have teamed up with PETA to promote healthy and humane meat-free meals.