I put this movie in a category with other slightly anarchic anti-establishment movies such as "The Graduate," "If..." and "The Magic Christian." The only difference is that it pre-dates all of them. Being the first of its kind, its a slightly awkward film that doesn't always know what to do with itself. There are plenty of holes in the plot, and, if its a comedy the dramatic scenes are too strident, if its a drama then it is all done with too much flippancy.
On the whole, though, I really enjoyed it. I don't claim to be an expert on the culture of the mid-sixties, but it tackles a lot of topics that seemed to be taboo at the time, like Marie's death, and their rather self-conscious use of the word prostitute.
The acting is all excellent, I was particularly impressed with Tuesday Weld's performance. I had never really thought of her as anything more than the vapid lead to a bunch of teen movies, but I was really surprised at what a good actress she was. Roddy McDowall is excellent as Mollymauk, but the uneveness of the film doesn't do the character justice, and you get the feeling with a little more work on the plot and the pacing, he could have made the film hysterical.
Anyway, it was a good film, particularly impressive when you think of it as the prototype of a genre of film which is still being produced today.