Cinémathèque royale de Belgique
it's a project started in 1938 to collect and preserve all existing movies and to show them on a regular basis to the public to enlighten them for a fair price.
So everyday of the year (excpet 2 I think) they screen old and recent movies for 3 euro/movie.
What is very amazing is when they screen silent films because then you have a pianist playing in the theatre, it truely is amazing. You can check out the movies they will screen for the next two months on their website.
One more thing, go watch a silent film there!
Rue Ravenstein 3 1000 Bruxelles
Tel : 02 551 19 30