That is quite an interesting angle and I would certainly be interested in hearing views from others as well. I guess one of the risks is that to more you give of yourself the higher the risk that they will not like something you say. So it needs to be a balance between being too bland and being to candid

if that is possible.
I certainly agree that you should try to find something that makes you seem a bit different, separates you out and makes the recruiter want to learn more.
Hobbies are also an interesting idea. I am in two minds myself. It seems to be that they are either so policitcally correct that they are meaningless (keeping fit, charitable good works) or they run the risk of alienating one of the recruitment team (polictics, religion and stuff like that)
What do others thing?