This is a new technique I've been fiddling with. It's called either a bokeh panorama, or the Brenizer technique. Either way it's pretty fun, although it does require a bit of massaging in photoshop. Basically it's a panorama with very shallow depth of field, although that's not the best way to describe it. But it is fun. And that's what matters.
Read a bit more about the technique here, here and here. (The first two are links to where I found the method in the first place, and the last one is another tutorial I found helpful.)