I’ve already been a huge fan of “plastic bullet” for the iPhone (and now iPad).
I also asked many times “why not something like this via Photoshop, or via a stand alone program” and yes I know there is the great Alien Skin exposure 3 in which you can emulate all the film types you would ever wish for, and there is the great NIK and OnOne software, both with great options. But somehow the “clickyerdy click” method of plastic bullet is just great, just press and wait till it’s cool and every time the outcome is different, just like with a real toy camera.
Much to my delight plastic bullet is now available for the desktop under MacOsX. Today I showed it to some of my students and one even considered buying an Apple for this one alone (ok this was a bit over exaggerated, but let’s say he REALLY loved it).