I just got my Portable Media Center this morning, and here are two quick first impressions.
1) It is light. Very light. It feels slightly heavier than a pack of cards with the battery in, and about as heavy as two packs of cards with the easel protective case on it.
2) Preloading webcasts is not a very good way to show it off, as webcasts have shitty video and audio.
When I get it home, I'm going to sync over stuff from my Media Center PC and we'll see how it looks after that.