I had a list of videos through which show many of the the new features. The scripting feels a bit clunky in the couple I’ve wantched, but as a way of introducing a feature so that you’ve got some idea what to investigate in detail for yourself they’re hard to beat.
Windows 7 Feature Overview Demo 1: Introducing DirectAccess Demo 2: Using Search Federation Demo 3: Using Windows PowerShell 2.0 Demo 4: Configuring AppLocker Demo 5: Troubleshooting Windows 7
Windows 7 Deployment Enhancements Demo 1: Modifying Windows 7 Operating Systems with DISM Demo 2: Automating Deployment Using Windows Deployment Services Demo 3: Provisioning Virtual Machines
Windows 7 Manageability Solutions Demo 1: Configuring Group Policy Demo 2: Using Windows PowerShell 2.0 Demo 3: Using Support Tools Demo 4: Exploring System Recovery Options
Technical Overview of Windows Server 2008 R2 Part 1 Demo 1: Using Hyper-V Live Migration Demo 2: Booting from Virtual Hard Disk (VHD) Demo 3: Administering Windows PowerShell Remotely Demo 4: Using Active Directory Management Enhancements
Technical Overview of Windows Server 2008 R2 Part 2 Demo 1: Improving Availability and Scalability with Server Core Demo 2: Managing Web Applications with the Configuration Editor Demo 3: Installing and Using the Windows PowerShell Snap-In for IIS 7.5 Demo 4: Configuring an FTP Server with the New Administration Interface Demo 5: Connecting to Windows 7 Clients Using DirectAccess
Using the Windows Server 2008 R2 Migration Tools Demo 1: Installing Windows Server Migration Tools Demo 2: Migrating Active Directory Demo 3: Migrating DNS Servers Demo 4: Migrating IP Settings Demo 5: Migrating DHCP Servers Demo 6: Migrating Local Users and Groups Demo 7: Migrating File Servers Demo 8: Migrating Print Servers
If you want some "less clunky" versions, I've actually recorded these demos as 14 screencasts (that tie in to the full webcasts) from three of those topics above.
Windows 7 Feature Overview:
Windows Server 2008 R2 Technical Overview (Part 1 of 2):
Windows Server 2008 R2 Technical Overview (Part 2 of 2):