Richard Harris is amazing as George Adamson, an old man obsessed with returning captive lions to the wild in spite of poachers, politics and his own personal demons. Based on the life of George Adamson, Joy "Born Free" Adamson's husband, the movie has a flock of really great characters wonderfully played by all sorts of semi-stars (Ian Bannen, Geraldine Chaplin, etc.). I'd see it again.
Review of To Walk with Lions
