In the vein of incredibly easy 1 or 2-lines of code, here's another that's too embarassingly easy program to mention considering I asked for help to write it! :)  It IS useful I think though. (Unless there was something included with the Framework that I missed!)

public class AssemblyVersion
{
    public static void Main(string[] args)
    {
        Assembly asm = Assembly.LoadFrom(args[0]);
        Console.WriteLine(asm.FullName.ToString());
    }
}

This will print out the assembly qualified name of any .NET assembly ala:

c:\>assemblyversion.exe clipboard.exe
clipboard, Version=1.2.3.4, Culture=neutral, PublicKeyToken=null

This can be useful for auditing and creating manifests/lists of assemblies that are included with a distribution.  We'll probably put it in a NAnt task to make a list of what's supposed to be there versus what IS there.