Clerks

Clerks is identifiable as a low budget movie from it's few filming locations. The main setting of the movie is the stores where Dante and Randal work, and they venture off once or twice to other locations barely seen by the audience. 
It also uses little to no music by way of a score or soundtrack, which also gives it the naturalistic film that goes with the screenplay but shows it had a small budget to work with. There are also no editing techniques often used in higher budget films such as special effects or CGI. However, because of the nature of the film they wouldn't have been necessary anyway. Clerks relies very heavily on its dialogue, which works well for the settings and characters.