I realize this listing is as dead as dead but I didn't want to read others people's lists without making my own first.
Top 20 Directors with my 3 favourite films attached;
1) Alfred Hitchcock
(Shadow of a Doubt, Rear Window, Vertigo)
2) Billy Wilder
(Ace in the Hole, Stalag 17, Double Indemnity)
3) Sidney Lumet
(Network, 12 Angry Men, Serpico)
4) Stanley Kubrick
(2001, Clockwork Orange, Dr Strangelove)
5) Coens
(Fargo, Miller's Cossing, Lebowski)
6) Akira Kurosawa
(Seven Samurai, Yojimbo, Rashomon)
7) Alan J Pakula
(Klute, The Parallax View, All The President's Men)
8- Sergio Leone
(Once Upon A Time in the West/ America, The Good, The Bad and The Ugly)
9) Pedro Almodovar
(Women on the Verge of a Nervous Breakdown, Talk to Her, All About My Mother)
10) David Fincher
(Fight Club, 7even, Zodiac)
11) David Lynch
(Blue Velvet, Mullholland Drive, The Elephant Man)
12) Martin Scorcese
(Raging Bull, Taxi Driver, King of Comedy)
13) William Friedkin
(The Exorcist, French Connection, To Live and Die in LA)
14) Park Chan Wook
(Oldboy, Sympathy for Lady Vengeance, Thirst)
15) David Lean
(Laurence of Arabia, Bridge over the River Kwai, Brief Encounter)
16) Ridley Scott
(Alien, Blade Runner, Gladiator)
17) Francis Ford Coppola
(Apocalypse Now, Godfather 1& 2)
18) Michael Mann
(Heat, Manhunter, The Insider)
19) Michael Powell & Emeric Pressburger
(Black Narcissus, A Matter of Life and Death, Colonel Blimp)
20) Steven Spielberg
(Jaws, ET, Close Encounters of the Third Kind)