Actually I found this list.
Top 100 DVD Sales Of All Time
* as of 10 January 2010
1 1 FINDING NEMO Animated 23.600.000
2 2 PIRATES OF THE CARIBBEAN: THE CURSE OF THE BLACK PEARL J. Depp 21.500.000
3 3 SHREK 2 Animated 20.400.000
4 5 THE DARK KNIGHT Christian Bale, Michael Caine 18.793.000
5 6 TRANSFORMERS Shia LaBoeuf, Tyrese Gibson 18.270.000
6 4 PIRATES OF THE CARIBBEAN: DEAD MAN'S CHEST Johnny Depp 17.383.000
7 9 CARS Animated 16.185.000
8 7 THE LORD OF THE RINGS: THE FELLOWSHIP OF THE RING Elijah Wood 16.000.000
9 8 THE INCREDIBLES Animated 15.600.000
10 10 THE LORD OF THE RINGS: THE TWO TOWERS Elijah Wood 14.930.000
11 11 SPIDER-MAN Tobey Maguire, Kirsten Dunst 14.769.000
12 12 THE CHRONICLES OF NARNIA: THE LION, THE WITCH.. Georgie Henley 14.725.000
13 13 PIRATES OF THE CARIBBEAN: AT WORLD'S END Johnny Depp 14.197.000
14 18 HAPPY FEET Animated 14.180.000
15 21 THE POLAR EXPRESS Tom Hanks 13.932.000
16 14 300 Gerard Butler, Lena Headey 13.900.000
17 15 THE LORD OF THE RINGS: THE RETURN OF THE KING Elijah Wood 13.800.000
18 16 RATATOUILLE Animated 13.500.000
19 17 SHREK Animated 13.500.000
20 20 IRON MAN Robert Downey Jr, Terrence Howard 13.300.000
21 23 MONSTERS, INC. Animated 13.272.000
22 19 MADAGASCAR Animated 13.200.000
23 22 SHREK THE THIRD Animated 12.700.000
24 24 HARRY POTTER AND THE GOBLET OF FIRE Daniel Radcliffe 12.600.000
25 26 HARRY POTTER AND THE SORCERER'S STONE Daniel Radcliffe 12.400.000
26 25 THE PASSION OF THE CHRIST Jim Caviezel, Luca Lionello 12.040.000
27 27 SPIDER-MAN 2 Tobey Maguire, Kirsten Dunst 11.723.000
28 30 HARRY POTTER AND THE ORDER OF PHOENIX Daniel Radcliffe 11.637.000
29 28 HARRY POTTER AND THE PRISONER OF AZKABAN Daniel Radcliffe 11.600.000
30 51 TWILIGHT Kristen Stewart, Robert Pattinson 11.588.000
31 NE TRANSFORMERS: REVENGE OF THE FALLEN Shia LaBeouf, Megan Fox 11.520.000
32 29 THE MATRIX Keanu Reeves, Laurence Fishburne 11.000.000
33 31 HARRY POTTER AND THE CHAMBER OF SECRETS Daniel Radcliffe 10.900.000
34 32 BATMAN BEGINS Christian Bale, Liam Neeson 10.810.000
35 35 THE NOTEBOOK Ryan Gosling, Rachel McAdams 10.680.000
36 33 STAR WARS: EPISODE II - ATTACK OF THE CLONES Ewan McGregor 10.500.000
37 34 WALL-E Animated 10.400.000
38 36 STAR WARS: EPISODE III - REVENGE OF THE SITH Hayden Christensen 9.850.000
39 37 ICE AGE Animated 9.500.000
40 48 MY BIG FAT GREEK WEDDING Nia Vardalos, John Corbett 9.470.000
41 NE UP Animated 9.433.000
42 38 PEARL HARBOR Ben Affleck, Kate Beckinsale 9.400.000
43 39 SHARK TALE Animated 9.400.000
44 40 KUNG FU PANDA Animated 9.335.000
45 41 NIGHT AT THE MUSEUM Ben Stiller, Carla Gugino 9.300.000
46 44 ICE AGE 2: THE MELTDOWN Animated 9.289.000
47 NE THE HANGOVER Bradley Cooper, Ed Helms 9.121.000
48 42 NATIONAL TREASURE Nicolas Cage, Jon Voight 8.960.000
49 43 THE DEPARTED Leonardo DiCaprio, Matt Damon 8.940.000
50 45 THE MATRIX RELOADED Keanu Reeves, Laurence Fishburne 8.800.000