What about all the old music programs that had some incredible stuff we'd all want to see now if they'd bothered to keep the tapes/film? Such as:
The 6:5 special, which had guest appearances by Big Bill Broonzy, Sidney Bechet, loads of old British skiffle groups etc
The series of Grand Ole Opry they showed in the UK in the fifties, with Stanley Bros, Bill Monroe & the Bluegrass Boys, Grandpa Jones etc
The early 60s play that Bob Dylan appeared in: He would sit on the stairs singing, playing guitar & blowing harmonica. What was it called?
Sunday Night at The London Palladium, with Buddy Holly & The Crickets.

The series with the white sports car and London Bridge - wasn't that Danger Man, with Patrick McGoohan, the series that preceded The Prisoner?

Cheers
Ray