A whole host of British actors are currently making names for themselves in the United States. But who does the best - and worst - American accent?
We asked RT users. Over 3,000 of you voted, choosing Hugh Laurie's accent as the most authentic. But who else impressed - or failed to? See below for the full results.
Who has the best American accent?
1. Hugh Laurie (House)
2. Anna Friel (Pushing Daisies)
3. Michelle Ryan (Bionic Woman)
4. Damian Lewis (Band of Brothers)
5. Minnie Driver (The Riches)
6. Eddie Izzard (The Riches)
7. Joely Richardson (Nip/Tuck)
8. Ian McShane (Deadwood)
9. Louise Lombard (CSI: Crime Scene Investigation)
10. Marianne Jean-Baptiste (Without a Trace)
11. Lena Headey (Terminator : The Sarah Connor Chronicles)
12. Jamie Bamber (Battlestar Galactica)
13. Matthew Rhys (Brothers and Sisters)
14. Dominic West (The Wire)
15. Lennie James (Jericho)
16. Sean Maguire (The Class)
17. Idris Elba (The Wire)
18. Sophia Myles (Moonlight)
19. Other
20. Kevin McKidd (Journeyman)
Who has the worst American accent?
1. Michelle Ryan (Bionic Woman)
2. Eddie Izzard (The Riches)
3. Anna Friel (Pushing Daisies)
4. Hugh Laurie (House)
5. Ian McShane (Deadwood)
6. Sean Maguire (The Class)
7. Minnie Driver (The Riches)
8. Joely Richardson (Nip/Tuck)
9. Louise Lombard (CSI: Crime Scene Investigation)
10. Dominic West (The Wire)
11. Jamie Bamber (Battlestar Galactica)
12. Lena Headey (Terminator: The Sarah Connor Chronicles)
13. Sophia Myles (Moonlight)
14. Damian Lewis (Band of Brothers)
15. Lennie James (Jericho)
16. Marianne Jean-Baptiste (Without a Trace)
17. Matthew Rhys (Brothers and Sisters)
18. Other
19. Kevin McKidd (Journeyman)
20. Idris Elba (The Wire)
You can remind yourself of the actors' original British and fake American accents by watching the clips below - but please be warned that some of the clips contain strong language.