I attended the First Annual PITCHf/x Summit hosted by Sportvision and MLBAM in San Francisco May 10-11. My report on the summit is up at The Hardball Times. You can also get a couple other viewpoints from Ike Hall and Harry Pavlidis as well as the discussion thread at the Book blog.
I apologize to Harry for inadvertently leaving mention of his presentation out of my report at THT. Harry had a good report on all the amazing work that is being done by amateur PITCHf/x analysts like us.