Microsoft has confirmed that the Xbox 360 will be getting Sky TV in the UK this October. Pricing has yet to be confirmed. However, Microsoft has stated
"We’re looking at exciting ways to enhance your Sky-viewing experience too, bringing some of the Xbox 360’s unique functionalities into the mix. In the case of Sky Sports football content we’re thinking real-time interactivity, with mates chatting LIVE about matches, instant results, fixture updates and such."
There, you never need turn off your 360 ever again.