Rico Mariani (Chief Architect of Visual Studio – previously performance architect for .net), Vance Morrison (Performance architect for .net) and Mark Friedman (Architect Lead for the Developer Division of Performance Engineering) had a full day talk at the PDC about performance.
Unfortunately recordings are probably not going to be available since this was done at the pre-conference, but Vance posted all the slides they used on his blog.
Performance by Design Intro – Rico Mariani
Performance by Design CPU – Vance Morrison
Performance by Design Memory – Vance Morrison
Performance by Design Parallel – Vance Morrison
Performance by Design ASP.NET – Mark Friedman
Well worth a look,