I saw a bit of Christian the lion's story on National Geographic channel last night. It was quite an amazing story. The reunion scene was so touching... bring Kleenex! Also I was very impressed with the two young men for going to the extreme lengths they did to see that their friend had a good life in the environment he was meant to be in.
http://www.youtube.com/watch?v=ozXwG-bAf1k Click on the link under the video for the full story!