We use MS producer quite a bit for synching video to powerpoint, although since it's a free application, it isn't terribly well supported by Microsoft. It's only useful for an environment that is mostly Windows based, since presentations made with it won't play on anything but IE for Windows.

There was a problem with a presentation that would play fine on some computers, but would start up normally then stop with a script error before playing any video. It turned out that I had associated some of the Table of Contents entries with points on the video, rather than just with slides, as I normally do. Apparently machines running older versions of Windows Media Player (6.0.4) don't play those kind of script commands. The machines that did play it had been upgraded to WMP 9.