I noticed you're a KA intern. Can you comment on any interesting problems addressed or aspects of the iPad implementation? It appears to be fully native as opposed to a wrapped web app. Is that correct?

See kamens's post here for some comments:

http://news.ycombinator.com/item?id=3691076

The "right side" (video, subtitles) of the app is a single web view, but the outer shell and navigation is done natively.