I recently launched an application that lets you create your polls on Facebook and publish them on your fan page. This was something I wanted to do for a while since I thought there were no good polling apps on Facebook.
With Poll for Facebook, you can add as many questions as you want to your poll, images and invite your friends to answer it. There is a free and a Premium version.
I encourage you to try it and give me your feedback. It is now available in English, French, Spanish and German.