For the die-hards. I taped the Buzsaki and Wilson lectures at the Visualizing and Recording Large-Scale Ensembles short course at SFN. Quality isn't really great and a lot of it doesn't make sense without the slides, but, hey, it's there if you want it:

Buzsaki Intro and Lecture (mostly about multi-unit recording and unit isolation)
Wilson Lecture (more about the same, but focus on tetrodes and some data)
Buzsaki vs. Wilson (Breakout group with some questions, interesting to hear them converse and joke. Best sound quality I think.)