Update 2014/01/12 - now with limited live view capability.
Who could resist a RaspberryPi, certainly not me. But what to do with it? I still have no real firm ideas, but I thought I'd better do something. I used the Kivy cross platform framework and python-twisted networking framework to create a remote interface to the RaspberryPi Camera Module. Nothing fancy, no live view, but I'm able to take pictures from from Linux desktop, my Android phone, and any other platform supported by Kivy+twisted. Here's a screenshot where I used my Android phone to remotely command my RaspberryPi to take a selfie of the phone:
PiKam github wiki. You can browse the code directly on github.
It was interesting to try out Kivy. It's very easy to get started, going a bit deeper can sometimes exhaust what is in the documentation - it's best to then grep through the examples. You can do a lot quite quickly, but there are definitely limitations - for example, I don't think a PiKam live view via a video stream would be possible. If you just want to do simple cross platform mobile app it's worth a look.