I would like to recommend The Boxcutters' Podcast and their interview with Dr David Ranson (who advises tv shows on forensics-type-stuff) for his comments and insights on exactly how TV forensics is nothing like Actual Life. You can find it here: http://boxcutters.net/blog/2009/01/19/ep-165-dr-david-ranson-leverage-production-update/ or on iTunes.