Woah - just came across beaucoup knowledge in one place: The Archive.org Chinese University Lectures Collection
You can view a tag cloud of the topics for which lecture exist, or simply browse through them.
These lectures could be great to intermediate to advanced Chinese learners who want interesting audio materials to work with.
This library of open educational resources features 173 courses from 14 universities in China. The lectures and resources are presented in Mandarin, though a few include English. Subjects covered are business, Chinese culture, communications, computer Science, engineering, humanities, law, mathematics, and medicine. These university level materials are available for free download.
Participating universities include: City University of Hong Kong, Huazhong University of Science and Technology, Northeast University, Peking University, Shandong Medical University, Shandong University, Shanghai Jiaotong University, South China University of Technology, Southeast University, Tong Ji Medical School of Huazhong University of Science and Technology, Tsinghua University, University of Electronic Science and Technology of China, Xi’an Jiaotong University, and Zhongshan University.
This collection was donated to the Internet Archive by Professor Li Xiaoping of Peking University.
Visit the Archive.org Chinese University Lectures