I was eyeing two kinds of dried cherries at TJs this afternoon but didn't know what the difference might be (Bing vs. Rainier). I saw an employee and asked him if he knew. He said no, he had no idea, and proceeded to tear open a package of each and offer me a taste. Now that's customer service for you! I was very impressed. Also, I would have bought the one I liked less if I had been left to guess. Rainier cherries are sweeter; Bings are sweet but have that great tartness I appreciate in a cherry.
You don't run into that kind of service in big stores much these days (one of the reasons I usually like smaller stores...).