Do you see them? (Click to enlarge.)
There are some jobs you can tell are great fun for the people who do them, even though you wouldn't want to do it yourself. Maybe my job, law professor, is like that for you. For me, it's what these arborists do: climb four stories high in an ancient oak tree and drag along a chain saw to hack off dead branches, which they let crash to the ground.
Here's the photoset.
UPDATE: That's the tree in my backyard, and the arborists were working for me today. I asked one whether he gets scared. He said no and added: "It's the greatest job in the world!"