1. "Hoop Dreams," directed by Steve James, Peter Gilbert and Frederick MarxAstonishingly, I think I've seen all of these -- in most cases, several times. But it makes me wonder just how international the IDA really is. After all, Super Size Me is a very cute movie, but it's no La chagrin et la pitie, Berlin: A Symphony, or Man With A Movie Camera. Also, whatever you think about Ken Burns's later work, The Civil War is a masterpiece.
2. "The Thin Blue Line," directed by Errol Morris
3. "Bowling for Columbine," directed by Michael Moore
4. "Spellbound," directed by Jeffery Blitz
5. "Harlan County USA," directed by Barbara Kopple
6. "An Inconvenient Truth," directed by Davis Guggenheim
7. "Crumb," directed by Terry Zwigoff's Crumb
8. "Gimme Shelter," directed by Albert and David Maysles and Charlotte Zwerin
9. "The Fog of War," directed by Errol Morris
10. "Roger and Me," directed by Michael Moore
11. "Super Size Me," directed by Morgan Spurlock
12. "Don't Look Back," directed by DA Pennebaker
13. "Salesman," directed by Albert and David Maysles
14. "Koyaanisqatsi: Life Out of Balance," directed by Godfrey Reggio
15. "Sherman's March," directed by Ross McElwee
16. "Grey Gardens," directed by Albert and David Maysles, Ellen Hovde and Muffie Meyer
17. "Capturing the Friedmans," directed by Andrew Jarecki
18. "Born into Brothels," directed by Ross Kauffman and Zana Briski
19. "Titticut Follies," directed by Frederick Wiseman
20. "Buena Vista Social Club," directed by Wim Wenders
21. "Fahrenheit 9/11," directed by Michael Moore
22. "Winged Migration," directed by Jacques Perrin
23. "Grizzly Man," directed by Werner Herzog
24. "Night and Fog," directed by Alain Resnais
25. "Woodstock," directed by Michael Wadleigh
Via Kottke.