Alright, alright - I know it goes a bit against the grain in the PHP world to try to interface it with something like .NET, but the latest DevArticles piece does show some pretty cool things you can do with it.

In Using the .NET Assembly in PHP, the author shows you how to, using the COM, interface with the .NET components to create applications that use both the power and flexibility of PHP and the abilities of these components. The example that they give is an "app for a clinic, that will calculate the EDD (Estimated Delivery Date) from the specified LMP (Last Menstrual Period) date for any patient".

Honestly, I can see the benefit of being able to interchangeably use PHP and the COM components through .NET - but I just don't know how many people out there would find it that useful. I guess maybe I'm just missing out on the whole .NET scene (oh, darn), but it just doesn't seem like there's much to it all yet....