A lot of you seem to know only "A Serbian Film" when it comes to Serbian cinema, but there are much more and some of them don't suck even. Here are my recommendations.
The Professional (Profesionalac)
imdb.com
"Till recently an University professor, a bohemian writer, a member of Belgrade's intellectual circles and a passionate opponent of the Milosevic's regime, TEJA is today a manager of a big publishing house. One day a strange visitor comes uninvited to his office, carrying a big suitcase. That man is LUKA, a former agent of the Serbian Security Service, now a taxi driver. Suddenly a surprising confrontation of these two men begins, which is full of incredible twists."
My personal favorite, it provides insight into the political turbulence of Serbia in the 90s (and after the October Revolution in 2000.), and the brutality of the secret service under Milosevic's regime but mostly focuses on the effects that the politics had on the personal lives of the protagonists.
Pretty Village, Pretty Flame (Lepa Sela Lepo Gore, a more accurate translation would be "beautiful villages burn beautifully.")
imdb.com
"At the Belgrade army hospital, casualties of Bosnian civil war are treated. In the hospital they remember their youth and the war. Two young boys, Halil, a Muslim, and Milan, a Serb, have grown up together near a deserted tunnel linking the Yugoslav cities of Belgrade and Zagreb. They never dare go inside, as they believe an ogre resides there. Twelve years later, during the Bosnian civil war, Milan, who is trapped in the tunnel with his troop, and Halil, find themselves on opposing sides, fatefully heading toward confrontation."
Really grim, but not without moments of black comedy. The shitstorm of the Bosnian War is summed up in this film, many will say that it's biased but it's not really about politics or who was the bigger victim.