Another post about the spark plug cap and how it attaches to the wire made me go out to look at mine.
While I was going out there I thought that maybe I should take a look at the condition of the plug because it's been over 4000 miles since I last looked at it.
It is a NGK BPR6ES plug. The $2.50 kind.
It looks just like bare's plug. The gap is still set correctly and I'm a happy camper.
Just for giggles, I did replace it with a brand new plug of the same type but I am keeping the old one in the box in case I ever need it.