There are some good recorded sessions by Mark Russinovich which were presented at the recent PDC concerning the mysteries of Windows Memory Management. The first session concerns virtual memory and the second tackles physical memory and a process’s working set. There is a strong practical element, with the presenter using several of the sysinternals tools to demonstrate the concepts. I have, of course, read Windows Internals, but there’s nothing like a demonstration to bring some concepts into focus.
Other recent interesting videos include the recent Silverlight Firestarter Keynote and a talk by Jon Skeet on the mistakes in C#. This latter talk has an interesting section on static interfaces and some controversial ideas on sealing classes.