+2  A: 

You will need to manually inject the values from ViewData. The helpers encapsulate this, but if you are writing straight HTML there's no way for ASP.NET MVC to know how to wire the values to the form elements.

<input type="text" id="Name" name="Name"
       value="<%= ViewData.Model.Name %>" />
CodeMonkey1
I added an example to clarify.
tvanfosson
FYI, as of RC1 you can specify Model.Name (don't need ViewData prefix).
Tim Scott
Yes, you don't need the ViewData "prefix" but it will work both ways.
Andrei Rinea