Kurosawa and Francis Ford Coppola
Kurosawa and Francis Ford Coppola

In the 80s, master directors Akira Kurosawa and Francis Ford Coppola made and starred in a series of whiskey advertisements for Suntory Whiskey, posted below.  Not only does the ad include footage of Kurosawa directing a herd of horses and extras while filming "Kagemusha," but we can see the directors guzzling whiskey and not pretending to find it delicious.

Another site note: the multi-generational tie-in with Coppola's daughter, writer-director Sofia Coppola, using the filming of Suntory whiskey advertisement in her film, "Lost in Translation."  Hat tip to Criterion Corner for discovering this treasure.