I like Haneda, but I don't get a chance to use it often. Unlike some others, I like my airports packed with shops and restaurants. Narita is pretty good, too. Great souvenir shopping! Not sure how well the fingerprinting/mug-shot-taking is going to work.. The little airport in Terrace, BC has a great restaurant, and I used to like using it.. but the last time I flew to Vancouver, we had to take off the shoes, load our big bags into the x-ray machines ourselves, show ID twice, answer stupid questions, and generally feel like we were on the wrong plane. (Or maybe they had clocked that I was using them to fly student standby well into my 30's..)
Vancouver's International terminal is still looking great. I'd be happier if they kept the shops open for late flights to London, and where the heck did they move the bar to?
When I was younger, I loved Dulles. Not for the airport per se, but for the gigantor buses that came to take you off the planes. Those were cool.