I recently did an interview with Scott Swiggart on the subject of Crossbow and the article ended up on Dr. Dobbs, check it out: http://www.ddj.com/documents/s=9776/ddj1134151231499/swigart3.htm

I also did an MSDN TV segment, but it's not posted yet, but keep an eye out for it (http://msdn.microsoft.com/msdntv)