This is a best picture winner that has definitely not aged well. When it won in 1970 there was a big uproar over its rating (though it seems rather tame nowadays). Today that is all inconsequential and the film is left to simply stand on its own cinematic merits. It doesn't look great, the characters all all obnoxious any any emotional core was unearned. Mix in some very dated Jefferson Airplane like sequences and you have a seriously flawed film.