Mrs. Jones- Sesame Street and The Electric Company used a lot of "New York Actors" in there show. And some of these actors took work where and when it came. Skip Hinnant, who played on the Electric Company, was the voice of Fritz in "Fritz the Cat" the very first X-Rated animated movie.
A lot of other actors were seen on Sesame Street before they moved on to other things:
Raul Julia
Stockard Channing
Paul Benedict
and others.
My favorite part in "Shaft" is where Richard Roundtree smashes through his window in his upstairs office to escape the bad guys. Later in the day, he returns to his office, and his windows is completely restored (and this is one of those multi pane jobs). Great stuff!