A quick little plant I just created for the speed modelling challenge over at http://forums.cgsociety.org/showthread.php?p=6915314#post6915314. Total time to create this was about an hour and 25 minutes or so.
Jeff Thomann's Blog
Jeff is reclaiming his unique digital identity with a sense of clarity.
Jeff Thomann's Blog 
If you have a JPEG image and want to know if it’s PSed. Go to Photoshopped Image Detector, put in the URL to the image, and hit submit. The system will analyze the image for you. If the image has been edited, detailed info will be shown.