Waiting room nicer than a doctor's office. Free coffee, free sodas, TV, books and toys for the children. I'd go back even if I didn't need anything done with my car. Heck, if I were younger and not married, I might take a date there.
Had an oil change done, they didn't try to upsell me with wiper blades, unneeded filters, air fresheners, ...only told me exactly what was needed for now - and things that can be taken care of later.
The fellow who did the work on the car left a card to introduce himself (put his signature to the work he did) and left me six Oreo cookies to eat on the way home.