ABC Nightline clip (February 13, 1984) 

I remember Chernenko was in poor health for most of his term and died about a year later. Johnny Carson came back from one of his long vacations after his death and one of the first lines in his monologue was "How's Chernenko's cold?"

Aw man-wish you had more of that SHOWTIME promo that was at the beginning of this clip!