My dad introduced me to Zappos some time ago and E and I have bought a few pairs of shoes from them. Every time, I am impressed with their service. They offer free shipping and return and usually the shoes show up faster than you expect, often overnight! Today, I read about one of their hiring techniques that leads to their amazing service.
About a week into a new hire's employment, they are offered $1000 to quit! Why? It insures that employees are committed to the company. You can read more details here. Also, read amazing story about one customer' experience with Zappos.