Hi, pal.
How are you doing?
It's been a long time. Good to know about you.

Talking about your question, I think it's not only a matter of choosing a film with clean pronounciation. You may choose a type of film you enjoy watching. What kind of films do you like?

Good standard English can be found in films like "Spanglish" (2004, Adam Sandler), "Lost in translation" (2003, Bill Murray), "The English Patient" (1996, Ralph Fiennes) or "The Interpreter" (2005, Nicole Kidman).

I wouldn't recommend films with affected accent or regionalism. Try to watch standard films using international English.

That's it.

Keep in touch, dude!

;-)

Hi Jeeza

The first question you mut ask yourself is whether you want to speak British English or American English. I'm not a big fan of Hollywood, so I'll presume that you'd like to speak like an Englishman from what we term the 'Home Counties' (this is the area just north of London where bankers live). If so, I would recommend some older films (many modern British films contain strong regional accents, particularly Cockney in Guy Richie movies). Try

'The Third Man', directed by Carol Reed and starring Orson Welles (a spy thriller set in Vienna in the late 1940s)
'Brazil', directed by Terry Gilliam (ex-Monty Python comedy team) (a comic take on the book 1984)
'1984' and 'Scandal' both starring John Hurt.
'Excalibur' by John Boorman, with an all-star British cast (a version of the King Arthur story)

Any 'Ealing Comedy', which are films made in the 1950s at the Ealing Film Studios, including 'Passport to Pimlico', 'The Lady Killers', & 'The Belles of St Trinians' (not the recent remake).

I would also recommend any film starring Anthony Hopkins, Stephen Fry, James Mason or Emma Thompson - they all have good clear accents and make good movies.

In contrast, you might wish to watch 'Trainspotting' (Glasgow), 'Twin Town' (Cardiff) and 'American Werewolf in London' (Yorkshire) to hear some strong local dialects, just in case you visit Britain where we have a large number of strange and wonderful regional accents.

All the best. 

@Adrenochrome: I agree with this. I had a chance to watch "Football Factory" series. (not the movie) There they visit most of british footbal firms. You can hear A LOT of different accents only in London, and cities near it. I think it's amasing. I am from Serbia, where most of people can speak (or just understand) English, but it's from american movies. And even at school we learn in american way (no ofense). So it was a really great experience to hear some of REAL english (cockney or whatever) in those series.