Dark Star is brilliant - John Carpenter’s first film if memory serves. Really very funny, low-budget science fiction. Silent Running is the one with Bruce Dern, isn’t it? Garden pod things on a spaceship. If it’s the one I’m thinking of, it’s an excellent film.
A couple of others for the Bear. Steelyard Blues, a kind of follow-up to Klute in that it starred Donald Sutherland and Jane Fonda, but is an anarchic comedy which received crap reviews, flopped at the box office but is actually pretty damn good. Little Murders, a dark satire on American society starring Elliot Gould, Alan Arkin and others I don’t recall (though with a fab cameo by the aforementioned Donald Sutherland).
Finallly, and probably fairly well known (though I wouldn’t bet on it) the original Bedazzled, starring Peter Cook and Dudley Moore. A 1960s reworking of the Faust myth, with Cook as the devil, Moore as Faust and Eleanor Bron as the love interest. Knowing (if you watch it more than once you’ll spot little details that are just brilliant, such as Cook handing Moore a wooden spoon with a very long handle when they sharing a bowl of strawberries). Great cameos too from Barrie Humphries, Raquel Welch and others.