From the Inquirer comes word that Nvidia driver version 41.09 and above may not allow you to play DVDs, if you have a TV encoder that isn't using Macrovision technology.
Anyhow, the move is pretty serious. If you don't buy hardware with Macrovision built into it, you may not be able to play DVD's on your operating system - at least not with some common apps. This essentially equates to the blackmail of hardware vendors to fork out fees to Macrovision if they want to claim OS compatibility, and it forces consumers as a whole to adopt Macrovision's "vision."