After reading Denizen's post about Franco I wanted to say that he's the biggest masochist on this forum, but now I can see that this title belongs to you.
George Melies - 16 Steven Spielberg - 15 Stanley Kubrick - 10 Chuck Jones - 9 Alfred Hitchcock - 9 Robert Zemeckis - 8 Ron Howard - 7 James Cameron - 7 Christopher Nolan - 7 Tim Burton - 7
Woody Allen - 41 Steven Spielberg - 22 Clint Eastwood - 16 Coen Brothers - 15 Tim Burton - 14 Terry Gilliam - 14 Alfred Hitchcock - 14 Robet Zemeckis - 12 Martin Scorsese - 12 Quentin Tarantino - 11 Ron Howard - 11 F. F. Coppola - 10 Ridley Scott - 10 Tony Scott - 10 Robert Rodriguez - 10 Roman Polanski - 10 Sam Raimi - 10
I've become more obsessive about my logging, so here are my most-seen directors by total duration of the films seen. In the case of films with multiple directors, the duration is divided evenly between the directors, so the numbers aren't perfect because of GONE WITH THE WIND and such.
Woody Allen (45 films, 4021 mins) Eric Rohmer (28, 2557) Alfred Hitchcock (23, 2511) Billy Wilder (21, 2477) Martin Scorsese (17, 2069) François Truffaut (22, 2053) Steven Spielberg (13, 1677) Howard Hawks (17, 1562) William Wyler (13, 1493) John Ford (14, 1483) Stanley Kubrick (12, 1462) Robert Altman (11, 1391) Steven Soderbergh (13, 1349) Jean-Luc Godard (17, 1255) Werner Herzog (13, 1200) George Cukor (11, 1151) Krzysztof Kieslowski (7, 1139) Akira Kurosawa (8, 1018)
Heh, you can make some amusing observations based on the average length of their pictures. Allen, Rohmer, Godard and Herzog are crisp, breezy, and fast-paced. (An attribute I generally like)
Stan Brakhage 37 (79.51) Alfred Hitchcock 24 (70.79) Woody Allen 14 (76.29) Louis Lumière 14 (51.64) Nicholas Ray 13 (89.23) Billy Wilder 10 (69.90) Stanley Kubrick 9 (86.00) Jan Svankmajer 9 (80.11) John Ford 9 (79.56) Wim Wenders 8 (82.88) Ingmar Bergman 7 (90.86) Jean-Luc Godard 7 (90.57) Guy Maddin 7 (88.71) Júlio Bressane 7 (81.71) John Huston 7 (80.14) Buster Keaton 6 (90.83) Charles Chaplin 6 (80.00) Martin Scorsese 6 (74.67) Georges Méliès 6 (69.83) Karim Ainouz 5 (91.80) Jim Jarmusch 5 (85.00) Fritz Lang 5 (83.60) Orson Welles 5 (81.80) Sidney Lumet 5 (81.20) Quentin Tarantino 5 (79.20) Lars von Trier 5 (76.60) Howard Hawks 5 (75.80) Coen bros. 5 (66.80) Maya Deren 5 (55.80) i think i've underrated her work. need to rewatch some of it soon Steven Spielberg 5 (45.60)