If you missed this on its initial broadcast, or the repeat last Monday or just now, it's available on Demand 5 till sometime in September in the UK.
It covers, as the title suggests, what 617 Squadron did after the famous Dams Raid - if you've read Paul Brickhill's book , not much of this will be new to you: the raids on the Dortmund-Ems canal, the Limoges rubber factory, the V2 and V3 sites, the Bielefeld viaduct, the U-boat pens... But it's well put together - it does omit a few nitpicky details that I'd probably have put in, but all in all it's a good little documentary.
Mimoyecques were still undamaged enough to be visited, and the presenter and a French historian just walking in to the tunnels was -- wow. Also, I don't think I'd really appreciated how the V3 was intended to work. Even as a die-hard 617 Squadron geek :D, I'd say this was worth a watch.