There are two parts to Dutch's: the outside pick-up window and the indoor bar. I'll share a quick word about the window and then elaborate more extensively on the actual bar.
1) window:
the concept is very cool - being able to walk up to a counter and, based on your generic interests (e.g. blue moon, red stripe) can be handed an all-star 6-pack filled with better versions of your favorite beers. With that said, I've never used the counter and the above is only what I imagine in my imagination for the counter to entail.
2) bar:
They stock so many beers inside that it amazes me how quickly the bartender is able to locate your order from within their fridge. It reminds me of my English professors' ability to be able to find a particular passage within a 1000-page novel in a matter of seconds.
The bar is wide and narrow, which does leave little room to walk through comfortably from end to end. And the cozy size coupled with it's bright mood-lighting both contribute to Dutch's serving as a watering hole for the neighborhood elite. Specifically, the Hyde Park late 20's through late 30's crowd (and older unmarried couples trying to feel hip) make up the main base here. In fact, my friends and I played a people-watching game while there called "spot the gentleman who looks most like the face of Hyde Park." We all found winners.