What is journalism?

Jenni, in her comments to Professor Wigggins' post, raises some valid points, I think. Is journalism too focused on government and politics -- perhaps because it's "easy" (everything is, to an extent, self-contained; we know the rules; government does touch our daily lives; etc.)? Business news has exploded in the past 15 years, but access is much harder, the rules aren't as clear (except where government intersects), and we have a built-in conflict and bias -- journalism as currently practiced is largely a big business. Entertainment journalism, as noted in the response to Jenni, still leaves a bad taste in some mouths, perhaps because of the way it is practiced. So let me throw open the discussion to our bloggers: What is journalism to you?