If it's not Zune leaks it's Comcast leaks, and this time we're hearing that Comcast is prepping its own music and movie download service. You can select TV shows, music or movies for purchase and download. Once you pay, you watch all content on your Comcast set top box.
Plus, you can even go to the Comcast site and download whatever it is you bought on iPod/PSP/Zune/Whatever format. It's pretty much like the Apple iTV, but without the computer in the middle of the picture. The details are still sketchy now, but we'll update as we know more.