Gravity forms is a plugin for WordPress to build forms for surveys and mailings. It isn’t free, but well worth the price as a very well designed product. If you are in the business of building websites, you inevitably will be needing to have at least a contact form on each of your sites, and having a consistent plugin on all your sites is invaluable.
Gravity will create a couple tables and allows you to easily view all form submissions and export to Excel. You can very quickly build forms with pull down menus, radio buttons, CAPTCHA, auto responders and many other advanced features.
The developer’s version will cost you $199, which is a bit pricey, but allows you to use it on unlimited sites.