In Part Two of our special "Tim Goodman's TV Talk Machine" interview with Ken Burns, the award-winning filmmaker talks about the differences between the subject of his latest documentary on World War II and America's current war in Iraq. Burns, who changed the landscape of TV documentaries with his landmark "The Civil War" 17 years ago, returns this fall with another epic called "The War," about World War II on PBS. Burns also tells Chronicle TV critic Tim Goodman about what he learned about World War II while making "The War," a seven-part, 14-plus hour documentary that focuses on what it was like to fight during WWII. He also talks about his 15-year deal with PBS and some of his future projects.