For those still in college, I think Zach Holman's talk ”If Only I Knew This Shit in College” is pretty good. He describes why he thinks startups are great, what they allowed him to do, what made him join GitHub, and how to keep improving.
I think most of this stuff applies if you're in industry as well. Basically the gist is don't be a dick, keep improving, and here's how to tell if you should jump ship or if the company you work for is worth sailing with.
http://zachholman.com/talk/if-only-i-knew-this-shit-in-colle... http://vimeo.com/92087878