What's the 'correct' way of registering/installing an Assembly to the GAC?

Question

There seems to be lots of different ways to register assemblies with the GAC, as in, they \'work\'. However, what\'s the \"proper\" way of doing it?

In response to

Answer 1

http://blogs.msdn.com/astebner/archive/2006/11/04/why-to-not-use-gacutil-exe-in-an-application-setup.aspx

It looks like the gacutil should be avoided; it's not a redistributable app. Instead, the 'proper' way of installing them seems to be using MSI, one way being WIX, as posted by CheGueVerra or another script.