The best donuts I've had from any place in the US. Beats Krispy Cream hands down. Any place with a line going out the door has to be doing something right. If you're visiting Indy I would suggest Longs yeast and applesause donuts. I've heard the blueberry cake and their brownies are good too. In response to the poster who said they had horrible service I would beg to differ. I've never had a problem. I visited there today and a guy in line was being a total crud to one of the ladies. Barking orders at her and when she asked him a simple question he yelled at her. She was still polite and helpful to him and when it was my turn in line she moved on as if nothing happened with him and gave me perfect service. Even went in the back to get me fresh out of the oven donuts without my having to ask.
I love the donuts at longs! I live in another city, but will make the drive anytime I have a craving for donuts! They are definitely worth it. The only bad thing is they only take cash, so don't go with a debit card!