I would definitely be interested in watching this, and I think the amount of feedback in this thread shows that others would be too. If you look at the Feedback

I would definitely be interested in watching this, and I think the amount of feedback in this thread shows that others would be too. If you look at the Feedback section of railscasts.com you'll see that the second most popular request is for Ryan Bates to "Build an entire application over a series of screencasts" and it has almost 1500 votes. Others have already pointed this out, but it's important to keep the screencasts short and try to split each project up into smaller videos by topic. I like screencasts, but there's nothing worse than sitting through an hour long video for 10 minutes of content. It's a waste of time, and it makes it difficult to find the valuable content again later without re-watching the whole video.