"And the RCC in Narita is AWESOME -- one of the best airline lounges out there!"
Oh yea, I love the automated beer pouring machine. Those are new clubs, both the main multifloor RCC in the center and the smaller one closer to the duty free. Both are very nice. Better than any US Club I have been in. Although I think in general the international clubs are better and I have not been in any US club internationally.
Overall, I have been pretty happy with the quality of US clubs and the staff are usually fantastic. Try changing a flight at an ORD RCC when there is bad weather in Chicago and Denver. I have never seen problems like that at a US club.