I came across this new Kickstarter project for a 360 Panoramic Lens that allows you to take 360 interactive video on your iPhone 4. A $50 pledge gets you on of the products if the project gets fully funded.
I could see making use of something like this for my Places LA videos where I try to make viewers feel as if they are actually at the location.
What could you do with a lens like this? Let me know in the comments.