To me, one of the most unexpected byproducts of digital photography is that it has rekindled tremendous interest in film processes of one kind or another. Alien Skin’s Exposure 4 plug-in for Photoshop lets you explore all sorts of film processes without ever having to soak your hands in noxious chemicals. I recently spent some time with the latest version, and was pleased to find that it remains an excellent option for users who want either a specific traditional film look, or any kind of analog, or grunge process. You can read my entire review here.