I received an email last week from a colleague of mine thanking me for some advice I had given him about distributing a survey through a listserv not owned by the School of Government.  At the time, I didn't even realize how important my critical thinking was.  It was just my way of thinking out loud about the process that he was going through to collect the data he sought.  I was able to lend some insight into the process, but I definitely did not think I would get such a nice email follow-up.