So having come back to Australia after some time spying on EM training in sunny California, I realised that it's actually not that different. The healthcare systems are obviously quite different, but the training is fairly similar, aside from a couple of things - the US training to become board certified is sooooooooo much shorter than both Australia, and the UK. Penetrating trauma is far more common too, gunshots etc. Everything else, from training courses, shift patterns / rosters / education & on floor teaching are fairly similar, when comparing like for like (I'm comparing US tertiary hospital to Oz tertiary hospital).
Here's a short excerpt recorded for the Dec 2011 episode of EM:RAP. Head over to EM:RAP for the full episode / to subscribe. Would love to hear from anyone out there who has either made the jump from Oz to the US or vice versa with regards to difficulties / hoop jumping etc..