Interesting; I was just in HK and Singapore and didn't realize they were connected underground. This is most likely because I had my phone on airplane mode so as not to incur roaming charges I'd like to see a list just out of curiosity, but for people who are travelling for business, this could be very useful indeed.

Haha! Don't worry, I don't. That's why I checked my MacBook's dictionary first. Confirmation from one source is apparently good enough for me!