liked it more then blue

Jeez, Blue had "Mysterious... sexy!" on the cover and White has "Intoxicating, erotic treat!". Whoever is marketing these is making european porn lovers rent the wrong movie and making film buffs feel embarassed to rent it.

Yes, definitely underrated. It has elements of the "tale fantastic" but it is most effective not in terms of realism - or lack of it - but rather the psychology of sex. Both protagonists begin the story at opposite emotional poles, and move through carefully plotted scenes of humiliation, revenge, compassion, and effectively the equivalent of rape to restore "normal" conditions of mutual love.

Especially notable are the cross-references to Blue (Juliette Binoche blunders into the early courtroom scene) and Red (check the sheets of Julie Delpy's hotel room bed where the "lovers" re-unite). And there's a mysterious appearance of a figure next to Zamachowski as he buys a bottle of vodka ...

There's also some significance to the director's choice to put the title in Polish ("Is it because I cannot speak French? ...").