The slides and videos from a great winter school organized by Yehuda Lindell at Bar-Ilan University is a great resource to learn about two-party computation (2PC) and secure multi-party computation (SMPC).
A great talk by Vitaly Shmatikov of University of Texas at Austin, on anonymity and privacy. Talk was given at University of Washington, brought by UWTV.
Surveillance Privacy Protection
This is a relatively old video of cutting-edge research from University of Kentucky. Even though it mostly concentrates on video-processing aspects, privacy is the key topic, and some cryptographic techniques are used for various purposes.