Well, people keep telling me they want to use Information Center for non-technical content, so there's been a fair bit of testing going on there. You'd be surprised that some big sites have some mis-coded feeds that have required some fixes and work arounds.
On a related note, alot of people are telling me that they are looking at Information Center as a replacement for iTunes. While I won't comment on that - this app was not developed in any way, shape or form to compete with iTunes (or anyone for that matter)- here are some screenshots of the same video content in both applications. One thing to note is that I added support for 'Explicit' tags - as can be seen in the clips from HBO's Entourage.