Well, I'm currently in the process of putting a portfolio/animation reel together for graduate school/post-grad internships. Pixar and Blue Sky only take undergraduate interns, or interns who have graduated in the last 9 months - so this is my big shot. Wish me luck!
While searching for a format to show off the updated rigging I put in my Sleasel character last semester, I stumbled across the idea of a TD reel. Basically, where riggers show off all of their fantastic abilities and try to get a job. I found this one really impressive, actually...
The squash and stretch capabilities are something I was really struggling to get in my Sleasel rig. He's supposed to be a rubber band! This stuff is really energizing to see.
If you want to see more, search for "TD character reel," or "technical reel," in Google Videos or YouTube.