Suggestions for a Real World WPF Video, please?

Since creating the first set of RWWPF (Real World WPF) videos, we had had loads of great suggestions on what else we could be showing. One of the re-occuring themes is about using Blend & WPF for LOB (Line of Business) applications - such as customer account systems, and internal tools.

So, I am adding the post to gather some feedback about what people are specifically interested in seeing. Are folk after 'How to make a data grid?' or 'How do I design and LOB for WPF?' or 'Why would I chose WPF for an LOB app?' or even 'I have an app, how do I make it look cool?'.

Whatever your thoughts, please reply to this post and we will try to capture as many suggestions in an LOB video as possible.

Thanks, Martin