1975-The Invisible Man

This was TV's second attempt to make a workable invisible man show, the earlier series of the same name airing 1958-1960.
Scientist Daniel Westin manages to turn himself invisible but can't turn visible again. D'oh!
He fakes visibility in the series by using a wig, gloves and a realistic mask that looks like actor David McCallum. Whenever the need arose, Westin would take off his mask and clothes and walk around naked as the invisible man. (I would imagine this to be somewhat problematic for a secret agent.) When he's invisible, phones lift themselves off the hook, cars drive themselves and great fun is had by all. Thirteen episodes were produced.
Gemini Man was a third attempt at this theme.