11. Dick Van Dyke- Mary Poppins
Before Charlie Hunnam came along, Dick Van Dyke’s iconic performance in Mary Poppins set the gold standard for bad movie accents.

While extraordinarily gifted, the Hollywood great couldn’t pull off a cockney accent even if his life depended on it, but with the movie being such a classic, Van Dyke’s performance is more celebrated than mocked.
12. Don Cheadle- Ocean’s Eleven series
From one bad cockney accent to another, Don Cheadle may be an Academy Award-winning actor, but his woeful London accent in the all-star Ocean’s Eleven series was a crime in lousy acting.

That said, the bomb expert’s unnecessary accent did offer viewers some comic moments in an otherwise dull franchise.
13. Demi Moore- Flawless
Demi Moore isn’t a bad actress (though she’s not particularly a good one, either), but her weak imitation of a British accent was apparent when she starred alongside Michael Caine in Flawless.

In fairness, Caine is British, so Moore’s accent was probably more scrutinized than it would have been if her co-star was American.
14. Julianne Moore- 30 Rock
Julianne More is often considered one of the country’s leading actresses, but she came under rare criticism when she appeared on 30 Rock sporting a weird Bostonian accent.

Viewers weren’t buying it, however, and Moore’s acting credentials took a rare hit because of it.
15. Mickey Rooney- Breakfast at Tiffany’s
Not only was Mickey Rooney’s prosthetics, in the iconic movie Breakfast at Tiffany’s incredibly racist, but his accent also sounded nowhere near Asian!

Still, Rooney’s career has been stellar, but he must surely look back on that performance and curl his toes with embarrassment.