Is  No 1from Calamity Jayne... I think, but not sure which song

No 3 is King and I.... Shall we Dance

No 4 Is Oklahoma... Surry with a Fringe on Top

No 7... Henry Fonda??

No 9 James Stewart and Farley Granger... Rope

No10... Lauren Bacall and Fred McMurray

No16.... James Mason... Spring and Port Wine

i think dustin hoffman and hilary clinton are in the last parts, i love these brisket but i can never do them,

listened again the one i thought dustin could be mel gibson (he he) havent gto a clue really.

Films.I have

casablanca

rear window

its a wonderful life

psycho

north by north west

12 angry men

Voices i have 

alfred hitchcock

george clooney

margaret rutherford

susan sarandon

hilary clinton    

There's a speed limit in this state-Double Indemnity.

If you are the police where are your badges.-The treasure of the sierra madre( i think)

I don't want to give anything away yet, - but you're all doing pretty well.

To find these men guity would be a crime and will haunt you till the day you die.

Paths of Glory,1957 ,directed by Sanley Kubrick.Kirk douglas played Col Dex.

one of the films that's not been guessed  - brief encounter

1 - calamity jane  - a woman's touch

12   Gordon Jackson

"What's holding him up"

White heat,James Cagney played Cody Jarrett

Edmond O Bien played agent Fallon. 

( Love the quiz Brisket)

6. "There's a light ,over at the Frankenstein's place!" from "The Rocky horror picture show" my fav film.. with Susan Sarandon singing  as JANET.,

Thanks erin

You're working very well. 

Bravo ladies Bravo

Alister Sims -THE GREEN MAN.

  Number 1-Annie get your gun.

Johnie get your gun ,get your gun .

Yankie doodle dandy,the song is called Over there.

Charlie Chaplin-Table Ballet ,the gold rush scene.

Gentlemen you can't fight here ,this is a war room .

Dr Strangelove .

At this rate erin you will deserve a special award. 

Brief encounter

Citizen Kane

I think the 11 film clips are (in order):

Citizen Kane

Casablanca

Rear Window

It's a Wonderful Life

Psycho

The Gold Rush

Brief Encounter (with Celia Johnson)

Dr Strangelove (or how I learned to stop worrying and love the bomb)

North by Northwest (the title comes from Hamlet)

12 Angry Men

and finally, City Lights

I was fairly certain that the last clip was from City Lights and confirmed it. I found this version of the ending on Youtube, which is well worth watching.

I am impressed. Your responses make the preparation all worth while.

I am loving that you are producing answers with added detail.

Your skills are most impressive.

I'll be back later in the day, when I'll cast an eye through every answer to see where the gaps are.

Thanks everyone.

So....

Still to be identified are

5  -  14  -  15  -  17

and in the final medley we still need numbers

18, 20, 22, 25, 27

 5 is:

14 is from "Kiss me Deadly" with Ralph Meeker as Mickey Spillane and Maxine Cooper as Velda.

El Loro     you are no slouch when it comes to films.

You've guessed my secret  - I'm quite interested in films and have seen all the films where I have given an answer including number 17 which I have tracked down to Carry on Constable. Initially I had assumed that it was a woman talking, but it's actually Charles Hawtrey.

I'll leave the other questions for others to try, but I'm guessing that 15 might be Martin Scorcese, but in an interview quite a long time ago.

I think no 20 is Moira Stewart.

the rest are proving difficult Brisket.

18 - Princess Anne? 

There's a newsreader in there too, the one with the straight black hair and I can't think of her name    Edit - I don't know why Fiona Bruce is sticking in my mind 

Sorry, I can't put the numbers to them but I think Annette Crosbie is another one 

Is 17 Kenneth Williams??????

Well done with Charles Hawtrey (17) El Loro.

erin - 20 is a newsreader (but not Moira Stewart)

sproooot - 18 is Princess Anne

Baz - El Loro has just pipped you for number 17. It was Charles Hawtrey - similar 'style'.

So   -

that leaves us with number 15.

and in the final medley we need 20, 22, 25, and 27.

Is 20 Angela Rippon??

Is my Fiona Bruce right please Brisket?