Video: Binding Data to ASP.NET 2.0 Server Controls
Keep in mind that I'm not a big fan of using the SqlDataSource in "enterprise" applications but I do find myself using it quite a bit for admin pages where I need to update look-up tables or perform fairly straightforward operations with a minimal amount of code. For N-Tier/N-Layer applications I prefer to use the ObjectDataSource control where appropriate. I'll put together another video that demonstrates how the ObjectDataSource control can be used with custom code or TableAdapters. You can view my ASP.NET Connections talk about the subject here if interested.