Bilo jednom... (English: Once Upon a Time) is a 2006 rockumentary by Serbian filmmaker

Jovan Đerić. The film's premiere in a packed Arena cinema, was followed by live sets from punk-rock bands Mitesers and Generacija bez budućnosti. The film is about the punk-rock scene of Novi Sad, in the first half of the 1990s. People who made up this scene talk 15 years later about the rise and reasons for the fall in interest in this kind of music, widely popular in Serbia during the rule of the late Slobodan Milošević. As many of interviewees state, a common enemy—Milosevic and his regime—was a good focal point for the energy their music was making. When this enemy disappeared, the whole movement lost its edge and these days the story is very much low profile.

Film was part of "Made in Vojvodina" program of 2007 Motovun Film Festival (Motovun, Croatia), presenting cinematography of Vojvodina, and also as part of four-day event—"Enter UK"—about cultural influence of British sub-culture in Serbia, held in Novi Sad during the EXIT festival 2007. Bilo jednom... was part of the program of several festivals (Grossmann (Ljutomer, Slovenia), Filofest (Ljubljana, Slovenia), ), and had a theatrical screenings in Warsaw, Poland and Mostar, Bosnia and Herzegovina.