Made in the wake of both 2001: A SPACE ODYSSEY (1968; the ultimate space opera) and EASY RIDER (1969; the era's biggest 'sleeper' hit), SILENT RUNNING was given the go-ahead by the executives at Universal in an attempt to recapture the momentum of those two films who even allowed special-effects wizard Douglas Trumbull to make his directorial debut, and this with unprecedented artistic freedom.
The film is a visual treat, featuring marvelous if unassuming special effects, though Trumbull manages to keep the technology firmly under control it is all so simple but still very impressive (even more so in view of the budget). Bruce Dern is appropriately cast as the film's eco-friendly hero. Joan Baez's two songs are very much of the time, and yet add quite a lot of humanity to the 'outer space' events. The film's sets (an unused aircraft carrier conveniently converted into a spaceship!) are also notable. However, the film's most endearing elements are the two almost-human 'drones', Huey and Dewey, which contribute to some amusing and even touching interplay with Dern; they were an obvious influence on C-3P0 and R2-D2 from from the STAR WARS films.
Still, I found the film to be somewhat plodding - especially since Dern is, for most of the time, the only human being on screen. In the end, SILENT RUNNING is a pretty good film, and a deserved cult item, but not a classic in the strict sense of the word. That said, it is a whole lot better than the only other feature film Trumbull directed, the dull and overblown BRAINSTORM (1983).
Universal's SE DVD is so packed with extras, it's almost too much: even so, there's actually little repetition throughout the lengthy documentary, numerous interviews and Trumbull's and Dern's joint commentary - and, all in all, it serves as irrefutable proof of the importance and worth (as in experience-enhancing capabilities) of DVD bonus material. While I was not overwhelmed when watching the film proper, after going through the mass of supplements on offer here I had a new-found admiration for what Trumbull intended - and actually makes me look forward to a more open-minded second viewing!