I had a late night last night but for good reason. One of the PBS channels we get on cable replayed the Nova episode with the recreation of the "Bouncing Bomb" dambusters raid. I understand that this has played under various guises in the UK, US and Canada - and in making of episodes on "Ice Pilots NWT". There is a good Canadian connection here since the aircrew were veteran water bomber crews flying a WWII era DC4, and the recreated dam that got blown up is in Northern British Columbia.
It was well done and really caught the flavour of the original design and testing. I loved a bit where the modern Cambridge engineering lecturer involved his kids in experiments just like Barnes Wallis did. It's also great to see "wonder weapons" where the science is so elegantly simple.