(This was posted elsewhere last summer, but fits this thread perfectly.)

I was in Perth last year to pick up continent #6 for the oneWorld 100,000-miles promo. Total time on the ground: two and a half hours.

The passport control officer on entry noticed that the answers on my entry form were a bit non-standard. Address in Australia? "none," and so on. He asked what what going on. I explained. He figured I may be insane but probably didn't pose a security threat, so he let me in.

About an hour later I went through the other way. The same officer saw me from the far end of the very large hall. He stood up, waved a newspaper in the air to attract my attention, and shouted across the room "Come on over here, so you don't have to explain it to someone else all over again!"

I cannot imagine a passport control officer in any other country doing that. Only in Australia!