I thought I was clever by greeting casting agents in my Australian accent and then switching to an American one during the performance. But the Australian accent seemed to put them off. Now it's the opposite; they love Australians. And with my thick Californian accent I now have a problem convincing them I'm Australian.
Acting for me was hard enough without having to think of the accent. And also, when I was auditioning for stuff I would walk into the room with an Australian accent, and I would do the audition in an American accent, and they would invariably say, 'Yeah, it's that good, but I can still hear the oddity coming through.'