The BBC is generally clueless about trailers, showing clips that deter me from viewing. The exception is its trailers for wildlife documentaries. I can hardly wait for its latest landmark series Frozen Planet, which begins next Wednesday at 9pm on BBC One (title link). It took 4 years to make and saw narrator Sir David Attenborough travel to both polar regions to describe the animals and to make sure those who deny planet warming get the message. The camerawork looks superb. The photo above shows a cameraman lying on Antarctic sea ice, holding an underwater camera on a pole to film a female killer whale and her calf rising to a spy hole. Wow!