I was in New York City for a business trip a week or so before my 10-year wedding anniversary. One afternoon, I stopped by the Tiffany & Co. flagship store on 6^th Avenue to look at anniversary rings.

A thoughtful representative named Duncan showed me several rings as he explained some of the nuances of color, cut, clarity, and carat weight.

The rings looked magnificent beneath the showroom lights. I recall that of the half dozen or so rings that I looked at, there was one that I kept going back to. Duncan noticed it too. And, of course, it cost 25 percent more than the others.

After about 30 minutes together, I thanked him for his time and told him that I wouldn’t be buying the ring today. I mentioned that I had an appointment in two days with a representative at the Denver location of Tiffany & Co. He congratulated me on my 10-year anniversary and wished me luck in finding the perfect ring.

Two days later I arrived at the Denver location of Tiffany & Co. and met with a representative named Cynthia. Cynthia brought me into a private room to show me a set of anniversary rings that she had selected based on the criteria we discussed. As she revealed each successive ring, she would say something like, “Now, this ring combines the color you are hoping for with the mounting we talked about.”

After introducing several rings in this way, Cynthia produced the final ring saying, “Now, this is the ring that you were especially taken by when Duncan was showing you rings at the 6^th Avenue store on Tuesday.”

I was absolutely floored! I said something like, “Huh? What? How did you…?”

Cynthia sensed my astonishment, smiled, and then explained that she had received a call from Duncan shortly after I’d left the 6^th Avenue store and that together they had made arrangements for the ring to be shipped overnight from New York City to the Denver location of Tiffany & Co. in time for my appointment.

Duncan and Cynthia worked together to deliver customer service that was completely beyond the realm of customer expectation. I had no reason to expect that the ring I’d looked at in New York would be among the options made available to me in Denver.

Does this level of customer service influence sales? Guess which ring I bought?

I wrote to the president of Tiffany and Co. about his employees’ legendary service and committed to “never purchase a significant piece of jewelry from a jeweler other than Tiffany and Co.”

After customers make such a commitment, there is no coupon or incentive program out there that is strong enough to lure them—and their future spending—away.

How about you? What retailer or brand are you committed to and why?

Below are three true stories that illustrate the memorable customer service behavior: deliver service heroics. In order for us to have a common understanding of what it means to deliver service heroics, consider this definition: Going beyond the job duties that are expected of the employee.

1.) Earlier this year, I worked with a client who shared a story about how one of his front desk agents, Shannon, had established a genuine rapport with a repeat guest over many months. The pair laughed together about many things, including the guest’s own self-deprecating comments about his old age. For instance, on occasion he would jokingly refer to his need for Geritol. Unbeknownst to him, Shannon recalled their conversation and had a small bottle of Geritol waiting for him in his guest room when he returned and checked back into the hotel. Not only did Shannon’s gesture put a big smile on the guest’s face, it also reinforced the value she placed on their relationship.

Here’s an excerpt from a letter sent by the guest to the general manager of the hotel: “I recognize great customer service skills and your Shannon is a gem… She has made my stays at your hotel very memorable and I guarantee that, because of her, whenever I return to visit our branch in your wonderful city, I will stay at your hotel. I will also recommend your hotel to my associates, comrades, and even competitors.”

2.) A few years ago, my wife and I made plans to celebrate our 10th wedding anniversary at The Broadmoor Hotel in Colorado Springs. I’d made arrangements for my wife’s anniversary ring to be delivered to the hotel in time for our arrival. As it happened, there was a snow storm that day in Denver and we ended up canceling our plans to stay at the hotel.

I contacted the Tiffany & Co. store in Denver with my dilemma and my salesperson, Christine, assured me that she would take care of it. What happened next was legendary. The store arranged for one of its security guards to drive two hours south of the store to Colorado Springs where he located the UPS truck that carried the ring, provided the paperwork necessary to claim the package, and then drove it another hour and a half to our house.

He arrived at 9:00 pm and wouldn’t even accept a gratuity for his extra effort. Of course, I wrote Tiffany’s president about the service heroics and committed to “never purchase a significant piece of jewelry from a jeweler other than Tiffany & Co.” And I meant it.

3.) I recently saw a television commercial for Angie’s list, a company that pre-screens service companies for quality and reliability. In it, a customer phoned her plumber who was working on a repair at her house. She notified him that she was running late and was concerned about her little dog, Molly. Joe, the plumber, then did something unexpected. In the customer’s words: “Joe patiently paraded her up and down the street, sacrificing his time and dignity (he was a large man and Molly was an itty-bitty terrier) until her business was done. That’s why he’s the only plumber I’ll ever use.”

You see, when a hotel desk clerk surprises you with a bottle of Geritol, when a jewelry store security guard delivers a package to your front door in the snow, and when a plumber takes your dog for a walk, they are going beyond the job duties that are expected of them. They are delivering the unexpected—the memorable.

And they are reinforcing the personal importance of their customers. That is, the value these customers bring to the business through personal spending, loyalty, referrals, etc. In every one of the above examples, the customer cemented the relationship with a commitment to repurchase.

So, whenever you have an opportunity to spend a little more time with a customer or, in some other way, perform beyond the limitations of your job description, do it. It will be refreshing for you and memorable for your customers!

Some employees have a penchant for delivering service heroics that become the subjects of many positive customer testimonials and even company lore. This is an effective way for these employees to express their uniqueness while making it memorable for customers.

For our tenth year wedding anniversary, I bought my wife an anniversary ring from Tiffany & Co. We had planned to stay at The Broadmoor Hotel in Colorado Springs, about an hour and a half from our home in southeast Denver, and I had made arrangements for the ring to be shipped to the hotel from the Denver location of Tiffany.

Well, as it happened, Denver was hit by a major snowstorm the morning of our anniversary and we chose to cancel our plans to drive down to Colorado Springs. Meanwhile, the ring had already been shipped and was in the process of being delivered to the hotel by United Parcel Service.

I contacted the Tiffany store in the Cherry Creek Shopping Center with my dilemma and my salesperson assured me that she would take care of it. What happened next was legendary. The store arranged for one of its security guards to drive two hours south of the store to Colorado Springs where he located the UPS truck transporting the ring, provided the paperwork necessary to claim the package, and then drove the ring another hour and a half to my house.

He arrived around 9:00 pm and would not even accept a gratuity for his extra effort. Of course, I wrote Tiffany’s president in New York City about the service heroics and committed to “never purchase a significant piece of jewelry from a jeweler other than Tiffany and Co.” He wrote back in acknowledgment of my letter—and in appreciation of my loyalty.

I’ve heard similar testimonials from others when presenting customer service training around the country. Without exception, the one element that each of these stories has in common is the customers’ unconditional loyalty to the company involved.

There’s no coupon or incentive program out there that’s strong enough to lure these customers—and their future spending—away.