This is only my second trip that involved Atlanta -- don't really have an opinion of it yet. They have a cool little train between the different terminals. And it was the one airport on this trip where I could snag an electrical outlet while waiting. Airports need way more passenger-accessible electrical outlets these days.

I'm not sure there are any airports I hate, although there are some I find more ... amusing ... than others. (Augusta ME has some interesting features, like having the counter staff double as flight check crew, and getting your bags hand-searched in front of all your fellow passengers.)