Thanks, HTML::FormFu looks pretty good. It seems to make an attempt at separating the display from the logic. While it's a tad more complicated than the others, it seems to attempt to handle all of the things involved for an HTML form. I'll likely give this one a try.

Some of the others are aimed at handling just the validation logic, and value transformation. Not a bad thing to handle, but the rendering requires quite a bit of thought too.

CGI::FormBuilder seems pretty decent and is documented well. The one problem I had was the rigidity in the display area. Since you pass in CSS arguments to the form, it doesn't look like this is separated out nicely (i.e. you'd want CSS classes and then to control layout separately). Perhaps this is just a simple example, and one can separate things (this wasn't clear from the 10 min I looked at it).