I'm contemplating a widget with quite a number of options, which will make for a lengthy widget form. To improve the user experience with this form, I'd like to divide it into sections. I don't feel like re-inventing the wheel, so what are some examples of widgets that have fairly complex forms (especially those which are divided into multiple sections) all the while remaining usable and easy to parse visually?
I should add that I'm looking for examples that could be considered "best practices", not messy kitchen sink forms that are difficult to use. I realize this is probably subjective.
Thanks for your input!