Here are some MSDN Webcasts of interest to Windows Mobile developers:

*MSDN Webcast: User Interface Techniques for Windows Mobile Devices (Level 200)Name%3d%22ID%22Value%3d%221032282499%22%2f%5e%7eargName%3d%22ProviderID%22Value%3d%22A6B43178-497C-4225-BA42-DF595171F04C%22%2f%5e%7eargName%3d%22lang%22Value%3d%22en%22%2f%5e%7eargName%3d%22cr%22Value%3d%22US%22%2f%5e%7esParams%5e%7e%2fsParams%5e%7e%2fCMTYDataSvcParams%5e
*MSDN Webcast: New Native Windows Mobile Development Features in Visual Studio 2005 (Level 200)Name%3d%22ID%22Value%3d%221032282419%22%2f%5e%7eargName%3d%22ProviderID%22Value%3d%22A6B43178-497C-4225-BA42-DF595171F04C%22%2f%5e%7eargName%3d%22lang%22Value%3d%22en%22%2f%5e%7eargName%3d%22cr%22Value%3d%22US%22%2f%5e%7esParams%5e%7e%2fsParams%5e%7e%2fCMTYDataSvcParams%5e
*MSDN Webcast: Migrating from embedded C plus plusName%3d%22ID%22Value%3d%221032282425%22%2f%5e%7eargName%3d%22ProviderID%22Value%3d%22A6B43178-497C-4225-BA42-DF595171F04C%22%2f%5e%7eargName%3d%22lang%22Value%3d%22en%22%2f%5e%7eargName%3d%22cr%22Value%3d%22US%22%2f%5e%7esParams%5e%7e%2fsParams%5e%7e%2fCMTYDataSvcParams%5e
*MSDN Webcast: Developing a SQL Mobile Application with Visual Studio 2005 and SQL Server 2005
*MSDN Webcast: Introduction to the New Native API's in Windows Mobile 5.0
*MSDN Webcast: Building a .NET Compact Framework Application for a Windows Mobile-based Device Using Visual Studio 2005

For those looking for a tutorial on building a complete Windows Mobile application from start to finish using Visual Studio 2005, .NET Compact Framework and SQL Server Mobile Edition, Maarten Struys has put together this excellent 13 part series:

*MSDN Webcast: Creating a Windows Mobile Line of Business Application, Part 1 of 13: Introduction
*MSDN Webcast: Creating a Windows Mobile Line of Business Application, Part 2 of 13: The .NET Compact Framework
*MSDN Webcast: Creating a Windows Mobile Line of Business Application, Part 3 of 13: Windows Mobile 5.0
*MSDN Webcast: Creating a Windows Mobile Line of Business Application, Part 4 of 13: Dealing with Data
*MSDN Webcast: Creating a Windows Mobile Line of Business Application, Part 5 of 13: Dealing with Data Continued
*MSDN Webcast: Creating a Windows Mobile Line of Business Application, Part 6 of 13: The User Interface
*MSDN Webcast: Creating a Windows Mobile Line of Business Application, Part 7 of 13: Adding Data-driven Functionality to the Application
*MSDN Webcast: Creating a Windows Mobile Line of Business Application, Part 8 of 13: State and Notification Broker and Message Interception
*MSDN Webcast: Creating a Windows Mobile Line of Business Application, Part 9 of 13: Using Web Services - See the Series Home Page for details
*MSDN Webcast: Creating a Windows Mobile Line of Business Application, Part 10 of 13: Accessing Pocket Outlook Data - See the Series Home Page for details
*MSDN Webcast: Creating a Windows Mobile Line of Business Application, Part 11 of 13: Targeting Multiple Devices - See the Series Home Page for details
*MSDN Webcast: Creating a Windows Mobile Line of Business Application, Part 12 of 13 - See the Series Home Page for details
*MSDN Webcast: Creating a Windows Mobile Line of Business Application, Part 13 of 13 - See the Series Home Page for details

If your looking to move beyond the basics and understand some of the more involved issues of Windows Mobile development, you'll want to check out this webcast series.
*Taking Your Mobile Apps to the Next Level
If you don't see a webcast you're looking for on this page, Try this one...
*Windows Mobile Webcasts