While it does annoy me that I'm treated like a criminal every time I enter the US I've never felt that those in customs were rude or unpleasant (though some friends have had some pretty shocking experiences)

Australia is the pits. It really pisses me off that it's my chance to be a local and get through customs quick but the utter shambles and disgraceful organisation means that it is consistantly easily my longest customs clearance. I'd be embarrassed if I could ever get over my frustration and anger at the joke that is clearing customs at sydney.