I am looking for a theme that is similar to the Airbnb website (www.airbnb.com) where there is a large background photo that changes each time someone lands on the page (I know this can be controlled via a script). The user should be able to browse through a few photos as well.

On top of this giant background image, I just want a simple registration box to overlay in one of the corners of the page, similar to how airbnb has the search fields setup.

I also want people to be able to "like" "tweet" or "pin" that particular image.

Does anyone know of a good theme that will get me close to this and then a few plugins that will help out with the registration field and social media components?

Thanks!