I call people "sir" a lot. Today I began wondering if I did this subconsciously because of my frequent failure to remember the names of people I'm talking to. Calling them "sir" effortlessly sidesteps this problem. I started wondering this while sitting in the hot tub, talking with the locker room attendant.
Ian: How was your workout today, Travis?
Me: Just great. (exaggerated sigh of relief)
Ian: Excellent, that is good to hear. I'll see you around, Travis. Have a wonderful day.
Me: Have a good one, sir.
Ian: Do you remember my name? I don't mind if you call me "sir," but do you remember my name?
Me: Ian! I'm always impressed that you know everyone's names.
Ian: Don't be impressed. Just do it. It's the most important thing you can do at a job. Show people that you respect them, that you care for them, and that you like being around them. That's more important than anything else, right?
Seems like pretty good advice to me.