Yeah I saw it many, many years ago. Just found a piece of it on YouTube.
http://www.youtube.com/watch?v=lCRIsjJFRNo
I saw a documentary on the History Channel a few months ago about the sabotage of the heavy water plant.
Those guys had to ski out of there for a few hundred miles.
It had interviews with some of the team members as well as photos and details of just how close Hitler was to creating a Nuke.
The film to which you refer is The Dambusters.
The 1954 film with Richard Todd. It is probably the most famous and best loved British war movie of all time. Every British person has either seen it or knows of it. Its much loved, the theme is iconic and the film is never off the telly here.
And is about to be remade by a British studio, with Peter Jackson (a Kiwi who has said the remake will stay British and not parachute in Americans stars to pander to an US audience) as director.
The raid was the famous 1943 raid by 617 Sq of the RAF on the three German dams, using the bouncing bomb invented by Barnes Wallis.