Best way of implementing DropDownList in ASP.NET MVC 2?

Question

I am trying to understand the best way of implementing a DropDownList in ASP.NET MVC 2 using the DropDownListFor helper. This is a multi-part ques

Answer 1

(You know this already!)

1. Pass the list in your model with a SelectList property that contains the data

Yes, add it when you build the SelectList. (If you build the list using LINQ, Union might come in handy.)

Yes do do, and yes you are.