Piece of Cake: good flying footage, but plot, acting etc dire, so didn't get a single repeat. Also woefully innaccurate (Mk 1 Spits flying from French airfields during Battle of France and so on). The book (in which they fly Hurricanes) is OK but I think overrated. Not a patch on Deighton's masterly and truly horrifying Bomber, for which he justly won the Booker Prize in 1970. The BBC Radio adaptation of it from 1995 is also stunning: available on tape. Likely to induce tearfulness so take care if listening in the car.
The WW1 TV thang was called Wings, which as far as I recall was low budget !!!!!e with hardly any flying. Sort of Upstairs Downstairs with wizz bangs.
Somebody mentioned the Aeronauts: superb! Cheesy French 1970s Mirage jocks and bottom-slappers wear big shades, have gigantic sideies, shag 15 blondes, smoke 90 Gitanes, beat up 20 crooks, then shoot down terrorist bad guys in Magisters over Central Paris. Also coolest theme tune ever.