One of the things that I like to do with the Curves tool in Adobe Photoshop CS is to simulate the look that we used to get by "cross processing" our film. This stylized use of color can be used to create a strange dramatic mood. Now I can do this kind of image processing without leaving my favorite software thanks to the expanded Curves tool in Adobe Photoshop Lightroom 4!
I recorded a video tutorial on how to create this "cross processed" style using Lightroom 4 at http://bit.ly/W6l1dg
Learn more about my Adobe Photoshop Lightroom seminars and digital photography field workshops at http://bit.ly/Mn5Q8Z