Aye i saw that 'mincemeat' doc too; twas interesting - some of the most famous spy novels are written by actual ex-spies (flemming, john le carre) so there should be some similarity; though i've heard le carre say it was mostly paranoid upper class idiots doing paperwork in reality.
About the gladio, the idea of stay-behind-armies was first done in britain during ww2 - michael foot was actually one of the people trained to do terrorism if the nazis invaded. Gladio (and the similar operations elsewhere) were based on that. It's a cool story - i don't think that bbc doc quite covers the whole lot (more's come out since), but you get enough to start with - it even links in to P2 and all that (to push your conspiracy theory buttons...)