A - Amelie

B - Brokeback Mountain

C - Charlie and the Chocolate Factory

D - Devil Wears Prada

E - Eternal Sunshine of the Spotless Mind

F - Flags of Our Fathers

G - Gangs of New York

H - Harry Potter and the Goblet of Fire

I - The Illusionist

J - Juno

K - Kill Bill

L - Lord of the Rings

M - Meet the Parents

N - Napoleon Dynamite

O - O Brother, Where Art Thou?

P - Phonebooth

Q - The Queen

R - Road to Perdition

S - Shaun of the Dead

T - Team America

U - Unbreakable

V - V for Vendetta

W - The Wrestler

X - X-Men

Y - Y Tu Mama Tambien

Z - Zoolander

1990's

A = Austin Powers

B = The Bodyguard

C = Cool Runnings

D = Dumb and Dumber

E = Edward Scissorhands

F = Fear and Loathing in Las Vegas

G = Ghost

H = Home Alone

I = In the Name of the Father

J = Junior

K = Kingpin

L = Look Who's Talking (sure that was 80s?)

M = Men in Black

N = The Nutty Professor

O = Outbreak

P = Pulp Fiction

Q = Quizshow

R = The Rocketeer

S = Speed

T = Trainspotting

U = The Usual Suspects

V = Very Bad Things

W = Wayne's World

X = X-Files

Y = You've Got Mail

Z = Zorro

My daughter is stuck on three 

1980's

A = Airplane!

B = Back to the Future

C = Coming to America

D = Dirty Dancing

E = E.T

F = Flight of the Navigator

G = Ghostbusters

H = Honey I Shrunk the Kinds

I = Indiana Jones and the Raiders of the Lost Ark

J = Jumpin Jack Flash

K = Karate Kid

L = Labyrinth

M = Mannequin

N = A Nightmare on Elm Street

O = Octopussy

P = The Princess Bride

Q = Q: The Winged Serpent

R = Rambo

S = Short Circuit

T = Teen Wolf

U = The Untouchables

V = Vice Versa

W = Weird Science

X = Xanadu

Y = Youngblood

Z = Zelig

1970's

a. Apocalyps Now

b. Blacula

c. (A) Clockwork Orange

d. Deliverance

e. Enter the Dragon

f. Fiddler on the Roof

g. Get Carter

h. Herbie Rides Again

I. Ilsa: She Wolf of the SS

j. Jaws

k. Kramer v Kramer

l. Logan's Run

m. Mad Max

n. National Lampoons: Animal House

o. One Flew Over the Cuckoo's Nest

p. The Poseidon Adventure

q. Quarophenia

r. Rocky

s. Shaft

t. Taxi Driver

u. Up in Smoke

v. Valdez is Coming

w. Westworld

x. X Y and Zee

y. Yanks

z. Zulu dawn

1960's

a. Alfie

b. Barbarella

c. Cool Hand Luke

d. Dr Strangelove

e. Easy Rider

f. (A) Fistful of Dollars

g. (The) Graduate

h. Help

I. (The) Ipcress File

j. Jason and The Argonauts

k. Kes 

l. Lolita

m. Mary Poppins

n. (The) Nutty Professor

o. One Million Years BC

p. Planet of The Apes

q. Quatermass and the Pit

r. Rosemary's Baby

s. (The) Sound of Music

t. Thunderball

u. (The) Unforgiven

v. Viva Las Vegas

w. Where Eagles Dare

x. X The man with the x-ray eyes

y. You Only Live Twice

z. Zulu

1950's

a. Attack of the 50 ft woman

b. Bridge on the River Kwai

c. Cat on a Hot Tin Roof

d. (The) Dam Busters

e. East of Eden

f. Forbidden Planet

g. Gentlemen prefer Blonds

h. Hunchback of Notre Dame

I. Ice Cold in Alex

j. Jailhouse Rock

k. The King and I

l. Ladykillers

m. Mon Oncle (AKA My Uncle)

n. North by Northwest

o. Oaklahoma

p. Plan 9 from outer space

q. (The) Quiet Man

r. Rear Window

s. Seven Year Itch

t. Ten Commandments

u. Underworld Beauty

v. Vertigo

w. The Wild Ones

x. X The Unknown

y. Young at Heart

z. Zero Hour

Sci-Fi

a. (The) Abyss

b.

c.

d. Donny Darko

e. (The) Empire Strikes Back

f. Flowers for Algernon

g. Godzilla

h.

i.

j. Judge Dredd

k. King Kong

l.

m. Minority Report

n. 1984

o.Oblivion

p. Planet of the Apes.

q. Quarantine

r.

s.

t.

u. Universal Soldier

v. V

w. (The) War of the Worlds

x.

y.

z. Zardoz

Superhero

A  Amazing Spiderman

B  Batman

C Captain America

D Daredevil

E Elektra

F Fantastic Four

G Green Lantern

H Hellboy

I Iron Man

J Jonah Hex

K Kick Ass

L League of Extraordinary Gentlemen.

M- Miracle Man/Marvelman

N Nick Fury

O-

P-

Q QUicksilver

R Robocop

S Superman

T Teenage Mutant Turtles

U Unbreakable

V Venom

W Watchmen

X  Xavier

Y Yellow Jacket

Z-

Action Film

a. Air Force One

b. Bad Boys

c. Con Air

d. Die Hard

e. The Expendables

f. Face Off

g. Gone in 60 Seconds

h. Hot Fuzz

I. Independence Day

j. (The) Jackal?

k. Kung Fu

l. Lethal Weapon

m. Mission impossible

n. Nikita

o. Ocean's Eleven

p. Point Break

q. Quantum of Solace

r. Rush Hour

s. Sherlock Holmes

t. Top Gun

u. Under Siege

v. Volcano

w. Waterworld

x. xXx

y. You only Live Twice

z.

Comedy Film

a.

b. Best in Show

c. Carry on Doctor!

d. Dr .strangelove

e. Elf

f.

g.

h.

i.

j.

k. King Pin

l.

m. Meet the Parents

n.

o.

p. Pink Panther

q.

r. Roxanne

s.

t.

u.

v. Vice Versa

w.

x.

y.

z. Zoolander

Rom-Com

a.

b.

c.

d.

e.

f.

g.

h.

i.

j.

k.

l.

m.

n.

o.

p. Pretty Woman

q.

r.

s.

t.

u.

v.

w. (The) Wedding Singer

x. Xanado

y. You've got Mail

z.

War Film

a.

b.

c. Casablanca

d.

e.

f.

g. (The) Great Escape

h.

i.

j.

k.

l.

m.

n.

o.

p.

q.

r.

s.

t.

u. Up Periscope?

v.

w. Where Eagles Dare

x.

y. Yanks

z. Zulu

Horror Film

A = An American Werewolf in London

B = Bad Taste

C = Childs Play

D = Driller Killer

E = Evil Dead

F = The Fog

G = The Gate

H = Hellraiser

I = Invasion of the Body Snatchers

J = Jeepers Creepers

K = 

L = The Leprechaun

M = Misery

N = Nightmare on Elm Street

O = The Omen

P = Poltergeist

Q = Quatermass and The Pit

R = Re-animator

S = Scanners

T = Texas Chainsaw Massacre

U =

V = Videodrome

W = The Wickerman

X = 'X' The man with the X-ray Eyes

Y = Yuletide Massacre ?

Z = Zombieland 

Bond Film

a.

b. Baron Samedi

c.

d.

e. Ernst Blofeld

f.

g.

h.

i.

j. Jaws

k.

l. Largo

m. Moneypenny

n.

o. Odd Job

p.

q. Q

r. Rosa Klebb

s. scaramanga

t.

u. Ursula Andress

v.

w.

x.

y. Yaphet Kotto

z.

Still looking for answers. Add them to ECs 'Know your films?' thread. 

I've sussed out a few more myself, as well as adding a few more answers from others.

Horror Films:

G might be The Gate, judging by this film cover.

Yeah, we'll put that in.

The action one - C - is that something to do with Chuck Norris? 

Superheros:

O = Orgasmo

P = The Punisher

A - Air Force One

B - Bad Boys

C - Con Air

D - Die Hard

E - The Expendables

F - Face-Off

G - Gone in 60 Seconds

H - Hot Fuzz

I - Independence Day

J - The Jackal (?)

K - Kiss of the Dragon (?)

L - Lethal Weapon

M - Mission Impossible

N - Nikita

O - Oceans Eleven

P - Point Break

Q - Quantum of Solace

R - Rush Hour

S - Sherlock Holmes

T - Top Gun

U - Under Siege (?)

V - Volcano

W - Waterworld

X - xXx

Y - You Only Live Twice

Z -

Under Siege...Steven Segal film