What is your favorite lecture and who is your favorite speaker?

During watching the lectures I personaly learned which speakers helped me more. And that is because of how they provice the informations.

For example Adam Dobson in 'Lumbar Spinal Stenosis' and Dr. Agricola with the recent lecture in FAI-Syndrome did a great job! That is what needed in other and future lectures. They did a great job about diagnosis (clinical sings, radiological findings, symptoms), differential diagnostic and carrying out the tests for diagnosis on a patient. Also they link to studies and discuss these studies.

I hope that future lectures on these or other topic are of the same quality!