Check them out, for example this page of PowerShell Vids called Script Center Videos for some reason not immediately obvious…

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http://technet.microsoft.com/en-us/windowsserver/dd334524.aspx

TechNet Videos

Deployment Videos
TechNet Exchange Videos
ForeFront Videos
TechNet IE Videos
Microsoft Online Services Videos
TechNet Office Videos
Script Center Videos
TechNet Security Videos
TechNet SharePoint Videos
TechNet SQL Server Videos
System Center Videos
Terminal Services Videos
Virtualization Videos
TechNet Windows Videos
TechNet Windows Server Videos
TechNet Windows Server Core Videos