Free food!
I had to call my District Manager today with an issue on somebody's improperly redeemed credits. He mentioned that he was on his way to my store. Just as I got off, he showed up - and had me get whatever I wanted for lunch (So, of course, I loaded up my Okee Dokee plate, and made it a meal). I've thought since he started that he was the best DM I've ever worked under, but a DM that gives me free food, now THAT is a good DM.