This has nothing to do with aeronautics, but caught my imagination.
Listening to BBC Radio 4 this morning, I caught the first episode of a new series called "Engineering Solutions", presented by Adam Hart-Davis. It's nothing to do with aeronautics, they were talking about the technology behind tunnelling the new Channel Tunnel rail link - including 120m long drilling machines, with a crew of 14, commanded by a former airline captain!.
As a presentation of high quality, safety critical engineering at it's best, I found it absolutely fascinating. Presumably they'll repeat it at some point, but I've checked and it's already on the BBC's website at
http://www.bbc.co.uk/radio4/progs/listenagain.shtml , and I'd strongly recommend it to any engineer who can spare half an hour.
G