The show's central premise about a modern-day monarchy might seem unbelievable, but the show's dashing Aussie star is far from it. As David, he effortlessly sheds his heritage on-screen to morph into a heroic — and American-accented — figure.

The first time we spoke to Rhys on the red carpet, we thought he was putting us on. But somehow, he finds a way to flawlessly suppress his thick Welsh accent long enough to argue with all of his siblings at the Walker dinner table.

We're not ones to point fingers, but Anna Paquin's some of the southern accents on True Blood are just terrible. However, Kwanten's role as lovable-but-dumb good ol' boy Jason was so spot-on, we never would have guessed he's from Australia. Well played, mate.

Montgomery claims she tried — out of fear of losing her job, no less — to hide her Australian accent on camera for so long that she actually lost her native affectation completely. Whoops!

His last name should have tipped us off, but we completely buy O'Mara in all of his roles, from Life on Mars and Band of Brothers to guest spots on Grey's Anatomy and The Closer. Maybe he's just got the luck of the Irish.

As smooth-talking womanizer Chuck Bass, Westwick already has the ladies of the Upper East Side under his spell. So just imagine the amount of swooning that would go down if he were to use his thick English accent. Yeah, baby.

This British beauty owes her accent-masking skills to her father, who is a linguist. Friel's method acting kept her from dropping the accent even during breaks on the set, causing confusion and shock among the crew when she used her natural speaking voice. Glad we're not the only ones.

Maybe we were distracted by his golden locks and blue eyes, but we rarely hear Baker's Australian accent on camera. Even so, he's concious of the work it takes. He recently told David Letterman, "As long as I don't sound like someone from Alaska, I'm happy."

If the script for "Chuck Versus The Ex" hadn't called for Strahovski to use her real accent, we may have never known Yvonne's true roots. Then again, she's also spoken fluent Polish on the show. Confused yet?

Whether playing an American soldier in Band of Brothers or a tough cop on NBC's Life, Lewis hides his British accent brilliantly. Even though he said it took a lot of work to get it down, he makes it appear effortless.

She was born to Antiguan and St. Lucian parents and raised in London. But you'd never guess it based on her work as American FBI agent Vivian Johnson.

We knew this Battlestar Galactica hunk's character was out of this world, but we didn’t know the actor himself hailed from across the pond. We're sure his role in Law & Order: London will enlighten a few more folks like us.

We kid, we kid. Cobie Smulders' Canadian-ness is played for laughs on How I Met Your Mother, but lovingly so. Who else but Robin Sparkles can tell you that the '80s didn't come to Canada until '93? Smulders masks her accent pretty well... unless Robin's drunk. Then it's all aboot Canada, eh?