these are also 404

http://channel9.msdn.com/Series/VisualStudioDocumentary/The-Visual-Studio-Documentary-Anders-Hejlsberg-full-length-interview

http://channel9.msdn.com/Series/VisualStudioDocumentary/The-Visual-Studio-Documentary-Scott-Guthrie-Full-Length-Interview

http://channel9.msdn.com/series/visualstudiodocumentary/the-visual-studio-documentary-s-somasegar-full-length-interview

etc.