Early on I did one of those big box electronic stores where you have to shop two departments. The guy in the large appliance department was so awesome, I actually felt guilty for not buying a refrigerator.
I ran into this same saleman in different areas of the store on other visits and he not only rememebered my name (yikes!) but asked if I was ready to order that appliance! I finally told him the renovation was cancelled.
Everytime I see this guy, he greets me by name now!