Matt Passmore, The Glades
Modern-day Crocodile Dundee? Not exactly. As quirky homicide cop Jim Longworth, the Aussie actor had to contend with real gators while solving crimes in the Florida Everglades.
Gabriel Byrne, In Treatment
The Irishman won a Golden Globe for his portrayal of a Maryland therapist in HBO's riveting drama. Maybe the Hollywood Foreign Press Association didn't realize the actor is supposed to be playing an American?
Matthew Rhys & Rachel Griffiths, Brothers & Sisters
A Welshman and an Aussie are American siblings in a dysfunctional—and dissonant—California family.
Poppy Montgomery, Anthony LaPaglia & Marianne Jean-Baptiste, Without a Trace
What's the secret to this show's seven successful seasons? Two Australians and an Oscar-nominated Brit!
Duped by their dialect? Vote below!
Dichen Lachman, Dollhouse
As Sierra, the Tibetan-Australian actress effortless assumes any accent required of her "doll" character in Joss Whedon's mindbender.
Natascha McElhone, Californication
The British actress who plays Hank Moody's laid-back artist girlfriend originally argued that her character should be French. As usual, America won.
Julian McMahon & Joely Richardson, Nip/Tuck
He left his accent Down Under, but the erstwhile Dr. Christian Troy's pop was once the prime minister of Australia. And his costar is a member of the famed Redgrave acting dynasty.
Sonya Walger, Brian F. O'Byrne & Joseph Fiennes, FlashForward
Lost's Penny Widmore pairs with the British Shakespeare in Love star as married Californians in the most exciting ABC drama you haven't seen yet. The Irishman is Fiennes' less convincing American comrade.
Nikolaj Coster-Waldau, Virtuality
If the Danish New Amsterdam star's speech seems peculiar as an American starship commander, maybe it's because he knew the pilot was doomed?
Rufus Sewell, Eleventh Hour
The English actor was a fine American in the CBS show no one seems to remember.
Sophia Myles & Alex O'Loughlin, Moonlight
Don't blame this show's controversy and failure on its English and Australian stars. Aussie O'Loughlin is playing another American in CBS' new Three Rivers.
Ian McShane, Kings
The English star wasn't able to recapture the success of his American Western series Deadwood in NBC's canceled series about the sovereign of a U.S.-mimicking futuristic nation.
Lena Headey, The Sarah Connor Chronicles
The English actress kicked serious ass as John Connor's American warrior mama.
Jason Isaacs, Jason Clarke & Fionnula Flanagan, Brotherhood
The Commonwealth and Ireland are well represented in Showtime's just-canceled Irish-American mafia drama.
Damian Lewis, Life
The beloved Band of Brothers star was not Made in the USA, but we'd be happy to have him all the same.
Idris Elba & Dominic West, The Wire
As drug kingpin Stringer Bell and maverick cop Jimmy McNulty, these two Englishmen could persuade the savviest Baltimore player they were born in the USA. (Elba also guest starred on The Office—American version—as Jim's corporate nemesis.)
Anna Friel, Pushing Daisies
The tragic cancellation of Bryan Fuller's fantasy had nothing to do with Chuck's accent. Did it?
Jason O'Mara, Life on Mars
The mysterious series only lasted one season, but the Irish actor would've made Barney Miller proud as a '70s American detective.
Jamie Bamber, Battlestar Galactica
If you're from the Twelve Colonies, you must speak with an American accent. Even if you're #secretlybritish.
Michelle Ryan, Bionic Woman
The British Jaime Sommers just wasn't built to last in NBC's reimagining of the 1970s hit series.
Jonny Lee Miller, Eli Stone
Despite the British actor's convincing turn as a prophetic American attorney and the show's cult fan following, Eli was canceled last fall. Did he see it coming?
Minnie Driver & Eddie Izzard, The Riches
Well, someone thought it was a good idea to cast two Brits as modern-day gypsies from the Deep South.
James Marsters, Alexis Denisof & Juliet Landau, Buffy and Angel
Joss Whedon staged a casting tea party with these three Americans playing enduring (and endearing) British characters on both his vampire series. Another surprise: Marsters isn't really platinum blond!
David Anders, Heroes
The American actor, so convincing as Englishman Sark in Alias, was picked to play Brit again for the antiheroic role of Adam Monroe.