Most iranian movies are excellent stuff.
my first exposure to movies from iran was at an iranian film festival in new delhi when i was in high school. i saw movies by Makhmalbaf, Parviz Sayyad and Ahmadreza Darvish and was totally hooked. I had to wait another 2 years for another iranian film festival to be held, this time shown on national television. all the movies/documentaries were excellent. I'm a big fan of Roosari Aavi and Babk Payami.
now that i'm in the US for my undergraduate studies, it's harder to come across iranian movies. but i'm sure i'll find a way...:)