I just found this on the Directors Guild of America website and haven't had time to watch it yet ...
On April 19, a capacity crowd in the Los Angeles DGA Theater witnessed the meeting of two iconic names in film history: one a living legend, the other an immortal giant. The 75th Anniversary Committee’s Clint Eastwood on the Impact of John Ford’s Stagecoach was an informative and engaging evening that analyzed the careers of DGA Lifetime Achievement Award recipients Ford and Eastwood — two filmmakers serving as cornerstones of a definitively American film genre, the western.
http://www.dga.org/Events/2011/06-june-2011/Clint-Eastwood-on-John-Fords-Stagecoach.aspxScroll down and click the first picture ...

... and it should take you to a video of the event (49:35, long!)
Clint's conversation partner is Paul Schrader, the screenwriter and director.