Jan Clayton and John Raitt perform the "bench scene" from Carousel on live television, March 28, 1954.
If you're unfamiliar with it, this is widely regarded as one of the superlative scenes in the history of the American musical theatre...
http://www.youtube.com/watch?v=_aThs1QIU0w
http://www.youtube.com/watch?v=AL8i5P1CvUE