Where Have You Been, Lawrence O'Donnell?

On "The Last Word with Lawrence O'Donnell" tonight Larry O., whom I generally like and respect, confounded me by airing a clip of FDR's "Let Me Warn You" speech and delighted in it as it were a revelation.  

The Clip:

Gee, Larry where ya been?                                      

I've been aware of this video for at least twenty years.