Things You Need to Know About Losing Weight (BBC) in 6 parts on YouTube:
part 1
http://www.youtube.com/watch?v=9lj-296lubc
part 2
http://www.youtube.com/watch?v=U4x82M9jCTs
part 3
http://www.youtube.com/watch?v=r9IYpwjtLfI
part 4
http://www.youtube.com/watch?v=4hJZtVDsipE
part 5
http://www.youtube.com/watch?v=mIHuH5C4w3g
part 6
http://www.youtube.com/watch?v=noTL01QKWNE