Movie Videos: : Reviews of feature films new on video this weekend (unless otherwise noted.)

*** “Once Upon a Honeymoon.” Nostalgia Merchant. $19.95.

Leo McCarey’s political films are a pretty odd lot--and this 1942 wartime comedy is one of the oddest. Ginger Rogers, married to secret Hitler-agent Walter Slezak, has a European honeymoon, and each country they visit quickly falls to the Nazis; they’re pursued--in both patriotic and amatory spirit--by dimpled radio commentator Cary Grant. McCarey mixes sober anti-Fascist scenes with screwball romantic bits, which the cast handles expertly. (Grant’s tailor bit, slyly taking Rogers’ measurements, is a gem.) Yet if the mixture doesn’t jell, there’s something fascinating about the way it falls apart: A melancholy undertone throughout suggests the sadness beneath this great comic director’s improvisatory joie de vivre.