I think this was the first Ingmar Bergmann film I had ever seen. I had heard that his films were either very deep or very dull. This is deep, but by no means dull - I'd say it's the strongest argument I've seen for cinema being considered art. Watching Victor Sjostrom's character facing the brink of death and looking back nostalgically at his youth, the movie seems to capture the human sense of grief over the passing of time, and getting old - indeed, of mortality.
The performances are terrific - Bibi Andersson couldn't be more cute if she tried and Ingrid Thulin clenches her teeth with admirable restraint throughout. Sjostrom is suprisingly strong - he hadn't acted for nearly 10 years prior to this film, was famed for being a director.
There is no doubt that, like most of Bergmann's films, it operates on several levels, but this is his most accessible film. It moves at a gentle pace but it is constantly captivating and thoroughly moving. If you want to get into his films, then I would advise you to start here. You won't regret it.