I noticed that downloading a TVShow from Stream (as a test) didn't seem to affect the available space on my iPad memory as seen in iTunes (at least immediately). Strange. I was playing with the thought that the TVShow Download might show up in iTunes - but that never happened. Just wondering where these go then - some proprietary space locked into the App? Probably. Here's something I found inside the iPad/Tivo App - this hierarchy is inside the Tivo App - the last (highlighted) folder size is ~1070MB in size, and I have only downloaded one item using the Tivo App. All broken down to run with Quicksilver I guess.