Here is an Instructable that I have succesfully done many times. But first a couple warning notes you may want to consider before attempting this yourself. First, this can only be done with televisions that have pay per view channels running directly through the tv. Secondly any damage that you may have on the T. I take no responsibility for charges that may incure by accesing these blocked channels. The more that people expose this hack, the sooner it will somehow be blocked by management.
As it celebrates its first birthday, YouTube Live starts rolling out pay-per-view streaming. But not everywhere just yet. For some time now, YouTube Live has been thinking about how to move beyond a free, ad-based service. Now it's moving ahead with that plan.