La Planète des hommes perdus

Claude Rains stars as Prof. Benson, a cynical mathematical genius/recluse who must save the world from implacable aliens. The movie has an interesting premise - a planetoid enters into orbit around the Earth causing widespread upheavals of Nature, and turns out to be a sort of alien Noah's Ark - but is marred by a tiny budget, hambone acting (except for Rains), oafish direction, and really crummy effects even for 1961. This may not have been Rains' last film, but he certainly deserved better. Having said all that, for some odd reason this one remains a favorite. Guess there's no accounting for taste. Seriously though, there are worse. MUCH worse.