If you don't want to buy or rent the DVD, PBS is rebroadcasting the original British series on which last year's Steven Soderbergh film Traffic was based. The series has been reedited into two two-and-a-half-hour segments. In the NY metro area, WNET (channel 13) is showing part 1 on Sunday, July 8, and part 2 on Sunday, July 15; each part begins at 9pm. Other local times may vary. M.