Search for anything related to computer science, you will get tons of videos and true enough most of them are very bad quality in both content and language.
https://www.youtube.com/results?search_query=bkz+reduction
1. https://www.youtube.com/watch?v=c3Trwclh_Z4
2. https://www.youtube.com/watch?v=EapIVDlhvQU
3. https://www.youtube.com/watch?v=3cicTG3zeVQ
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4. https://www.youtube.com/watch?v=9i9BCsHxofE
...
* random may or may not have been influenced by Dual EC
Sounds like a missed opportunity to me.
Nothing about Functional Programming, Big data, even Theory of Computation (that was mine :D )