QuestionForm is an online survey tool that supports drag-and-drop design, standard response formats (multi- and radio choice, Likert scaling, narrative), linear and non-linear sequencing, multiple languages, etc.
It's FREE for 2 surveys per month (5 questions each), but for $20/mo, users can run 8 surveys (with unlimited questions). Results can be viewed live, via RSS or email, or exported to spreadsheet programs.
Along similar lines, you might consider Form Assembly, SurveyMonkey, PHPSurveyor, PollBuilder, or UM's survey system (for UM faculty and staff). Stephen Gourlay also put together a brief summary of online surveying a couple of years ago.
H/T to DownloadSquad for the QF link.