A lot of people are watching this with the misconception that it’s a film analysis. However, Žižek is a philosopher and critical theorist, and is thus expected no more than to write or lecture as one. He is not interpreting these movies as an auteur, critic, clinician or passive observer, but more specifically as a cultural theorist through the lens of Hegel-Marx-Lacan. The scenes addressed by Žižek in the documentary are simply used as allegorical devices to support his own theoretical framework.
Nevertheless, I still would not recommend this film alone as an introductory text to Slavoj Žižek. A neophyte of critical theory, myself, I have so far used these as supplementary material for the Lacanian elements of Žižek’s work:
1. Critical Theory Today: A User-Friendly Guide (Tyson, 2006)
2. Routledge Critical Thinkers: Jacques Lacan (Homer, 2005)
3. How to Read Lacan (Žižek, 2011)
4. IEP: Slavoj Zizek, 1949— (Sharpe, 2014)
5. Slavoj Zizek and the Reality of the Virtual (Wright, 2004)
Thank you for this answer, it was perfect.