An undergraduate co-intern (from the summer of 2009 and now he's back this quarter) here at the lab said something of interest to me yesterday.
"You don't even recognize how much your status has changed here in the lab. April is asking you to do cell cultures. Patrick's asking you to show him how to use the imaging machine."
...huh. Granted, the general productivity of my everyday lab life is low, but I suppose I have gained some knowledge here. All in all, that was a nice comment to receive.