This likely my last Chromecast blog post as it's only marginally within the definition of the blog.
Chromecast is now firmly established.
Google now has good way for you to find Chromecast enabled apps.
Here are the latest additions:
Google Announces 10 New Streaming Apps For Chromecast – ReadWrite
You'll likely see more of this sort of side usage of Chromecast soon:
Google improves its Santa tracking with a Chromecast-ready Android app (video)
And this is how Google intends to get around the uncooperative app vendors:
Android 4.4.1 shows signs that mirroring to Chromecast is coming soon
Really the only question in my mind is when will Amazon Video get there?