Oh memories of my first night in Vegas......
I had an In and out Burger for the first time in Vegas back in 2002. So I love it because it brings back fond memories of greasy goodness back when I was able to digest greasy goodness.
Even after I had one of their burgers I became an even bigger fan when I read a case study on the In and Out burger business in grad school. They make ONE main product and they own the entire supply chain. Because of this, they make an exceptionally tasty and fresh hamburger. They are not greedy in trying to increase their profits and compete with other markets (like making chicken sandwiches...) and they keep their location within a reasonable distance of their distribution center to provide fresh burgers. Awesomeness to the max!
Even if you aren't a supply chain geek like me, you'll still appreciate the fresh and tasty burgers In and out has to offer.