TiVo Without a TiVo Box?

I just saw a blurb come across my Google Reader that mentioned TiVo was now available as a software platform. Seems that Comcast customers will have the TiVo software in the Comcast's DVR, cool. I'll have to do some more research on this to see what it entails, but that's really cool for Comcast customers because TiVo is the best. Now, why couldn't Comcast have bought out Adelphia? Dang...