Mac OS X only: Never been entirely happy with the way your Mac reacts when you plug in your various camera-sporting devices? Wish it could do something different when you plug in your iPhone versus your DSLR? Cameras can help.
Cameras is a free preference pane that keeps track of cameras you've plugged into your Mac and allows you to set custom behaviour for each device. For example, whenever I plug in my point-and-shoot, I want to import photos into iPhoto. My iPhone, on the other hand, is normally filled more with screenshots than photos, so I'd rather not import anything into iPhoto (in fact, I'd rather it just do nothing). With Cameras, you can set system behaviour on a per-camera basis. Cameras can open any application, do nothing, ask you what to do, or just automatically download your photos.
Cameras is a free download, Mac OS X only. Thanks Jason!