Just from this time's MSDN Flash..Good read..
1) Coding Best Practices Using DateTime in the .NET Framework
http://msdn.microsoft.com/netframework/default.aspx?pull=/library/en-us/dndotnet/html/datetimecode.asp
2) Secure Coding Guidelines for the .NET Framework
http://msdn.microsoft.com/security/securecode/dotnet/default.aspx?pull=/library/en-us/dnnetsec/html/seccodeguide.asp