My parents are DVC members, with the Beach Club as their home resort.
They really look forward to talking with Art, the gentleman who dresses as a sea captain and greets everyone with a salute as they walk in the hotel. (I think Art was even featured in one of Samantha Brown's Disney specials on teh Travel Channel.)
Anyway, one day, Art wasn't "on duty," so my Mom asked a manager where he was. The manager told her he was out sick. The next day, Art was back. As he and my Mom talked, Art revealed that he was just diagnosed with cancer. He seemed to be his usual upbeat self, but it's just a good lesson to remember that everyone, including Disney CMs, is fighting his or her own battles, so be extra nice.
(My parents, wife, kids, and I are going back to the BC in 9 days, so you can bet our first order of business will be to chat with Art.)