I've frequently talked and often thought about how I like to work with people who, to use my own vernacular, "intellectualize their jobs." What I have meant by this is summed up nicely in this fairly old essay by Eric Sink.
Here's an excerpt:
"We want learning to be a process, not an event. Making your first derivative constantly positive is not just about formal training. It is a posture which you bring to your job each day. It is a posture of teachability, a constant willingness to learn."
Check it out. The whole site is actually worth a read...
(via Eric Sink's Weblog)