Hong Kong airport: Thumbs up.
Anywhere that gives you free wifi that will happily download stuff at over 500KB/sec is worth a positive mention! This airport is a very slick operation - I got straight off my flight from Shanghai to walk pretty much directly from the jetway to a flight connections desk that got me checked in for my onward flight to Heathrow within 5 minutes. Security check was quick and painless. Heathrow, please learn from Hong Kong’s example.
The duty free’s pretty cheap too!
