The music, the scenery, the world it brings you into are all top notch. If you're seeking an escape from real life, this is it! Most episodes are: someone is kidnapped or lost and the others are fighting to retrieve them. They always come up with creative ways to save each other, though!
Everytime I find myself asking a question that I think the show forgot to account for, it ends up being answered eventually.
The only real drawback is I'm dreading the show ending, or seeing the last episode. I absolutely love this. It WILL make you cry.