Nicholas and Alexandra (1971)
It's Tom Baker's (the fourth Doctor) first major film role and the acting is very jaunty and wooden. It recounts the events of WWII from the perspective of Czar Nicolas II and, boy, is it a bad movie. There's plenty of scenes in this movie that is just begging to be riffed.
LOVER OF THE RUSSIAN QUEEN
HE HAD A CAT THAT REALLY WAS GONE
That song to be involved somehow in the commentary.