I'm considering building an iPad app for creating and publishing surveys. With WuFoo's recent acquisition, I looked at innovative ways to create forms. I think an iPad app is a great platform for throwing these together, having them auto-publish to specific channels (Facebook, Twitter, etc.) without having to login on a web interface. The target would be in-between complex form builders and Facebook polling. Customers could also use it as a way to collect in person surveys with a great UX.
I always thrash my ideas and validate it with the HN community before taking the next step.