To create the "scratched" sequences in the film (where a person during an interview suddenly speaks as if the film itself is being scratched), director Doug Pray sent audio clips which had been recorded onto vinyl to DJ Q-bert, who scratched them, and sent the recordings back to Pray. Pray then edited the interviews to match the scratched sound.
In the DVD commentary, director Doug Pray says that he was having a lot of difficult arranging interviews with many DJs, until DJ Qbert signed on. After Qbert's interview, DJs started calling Pray volunteering themselves.
Doug Pray stated in the DVD commentary that DJ Shadow advised him he wasn't really a Scratch DJ, but he demonstrated exceptional skills at DJ Qbert's house, in the "Jammin" scene