In announcing their presentation of Moliere’s riff on the Don Juan legend, The National Theater of the United States of America promised “a production so authentic that it rivals in authenticity Moliere’s own 1665 production at the Palais-Royal in Paris.” As we learn in an opening monologue, their tongue-in-cheek press release prompted one critic to sniff, “I see there is no translator mentioned. I assume you will be doing it in the original French.” Ah,......