Earlier this evening, I was attending the premiere of "L'Enfant" in Belgian theaters.
"L'Enfant" shows us a socio-drama, with a story located in the southern region of Belgium, in a city called Seraing, where most movies of the Dardenne brothers are situated.
I will not go into any plot summaries, but let me make a comparison with other directors, so you might get a clue if you'd like to watch this movie or not. Socio-drama is a genre in film not only made in Belgium. Many great directors have made solid socio-drama's: Aki Kaurismaki, Ken Loach, Mike Leigh and many others.
Where you can find a twist of humor in Kaurismaki's movies, you'll have a hard time finding it in "L'Enfant". A high level of realism avoids any dramatization of the struggle-for-life the protagonists experience. This makes it for the viewer not easier to swallow. The absence of a soundtrack even increases this effect.
This movie has many strong points, and although I haven't seen many of the other films who were competing with "L'Enfant" at the Cannes film festival 2005, I think this film has fairly won the Palme d'Or because it scores very high on the essential aspects of film-making: acting, camera-work (see comment by Toon Creemers) and script (dialogues).
I highly recommend this movie, but don't expect to be visually entertained the way we are used to by big budget films from Hollywood. Movies like these don't need a lot of dialogue, fancy one-liners or historical quotes - the picture says it all, in a simple but effective way.
Enjoy,