The Invisible Man

A 1975 series starring David McCallum as scientist Daniel Weston. After learning his boss wants to sell his invisability project to military units of the US, Weston turns himself invisible and sabotages the project. But alas, he cannot reappear after a few hours like his test cases before. It only ran for 13 episodes on US TV before being cancelled. It focussed on the humerous side of Weston's invisability as opposed to the tragic side.