There hasn't been a single PC leak yet, that should change in the next few days. Reloaded will probably be the first. That or someone will post a clonedvd which I will download then crack later.
I know there are a few, most are original xbox games and there are a few 360 games (you would need more than 20 games to fill up a 120gb). I have 1Tb of HDD space in my PC, so no need for marketplace downloads. I don't see the point in paying for video's on my xbox when I can get them free on my PC in better quality.
In other words its not needed for anyone if you have a computer.
There hasn't been a single PC leak yet, that should change in the next few days. Reloaded will probably be the first. That or someone will post a clonedvd which I will download then crack later.