I put my comments below this video so I wouldn't influence your experience of it.....
I've watched it three times now and have teared up every time; it is incredibly sad. But, there is a message and a beauty in the sadness that makes this video something special (it won best video at the 2010 Vimeo Awards).
Of course, the message of unconditional love as taught by the life of Oden is an important aspect of the video. But, for me, the power of this video is in how it forces the viewer to confront emotion, particularly sadness. Our society tends to be hyper-masculinized; promoting the hero as a stoic warrior archetype and, genrally, teaching us to hide our emotion and feelings. Sometimes, though, the difficult emotions need to be brought to the surface. By observing them we can begin to find the truth, goodness, and beauty hidden within them.
In the case of Oden, the truth was that he was in pain and needed to be put down. There was a goodness to Oden's owners doing the right thing despite the grief it caused. And, there was beauty in Oden's life and message being recognized, appreciated, and passed on to anyone watching this video. If the owner, as he put it, "John Wayned" it and put the dog down without feeling the sadness, then the lessons of truth, goodness, and beauty would have been missed.