The BBC's "Attenborough Archive" features a number of great video clips, including the famous sequence from "Life On Earth" featuring David's encounter with the Mountain Gorillas.
Life On Earth is available on DVD in the UK (Region 2), but unfortunately not in the USA - you'd need a region free DVD player to play the UK version.
David Attenborough's Zoo Quest For A Dragon is a lovely audio book about his early trip to Komodo.
