Stephen Baker's book, the Numerati, covers what data geeks are doing with stats, data mining, semantic analysis, machine learning...
Here's a link to some of his talks on the subject: http://thenumerati.net/index.cfm?catID=4
Here's a link to some of his talks on the subject: http://thenumerati.net/index.cfm?catID=4
There's an "aren't you shocked that they're gathering all of this data?!" tone that gets old as the book goes on, but it's generally a good read. He even describes some of the major algorithms (support vector machines and clustering) in layman's terms.