I studied documentary photography when i was college and university so you can understand that i'm NOT the biggest fan of the heavy manipulation of images.
A few weeks back i posted a link to a photoshop manipulation that was, quite frankly, scary.
The online photographer ( a rather good photography blog) has posted another such link to a pro photo retouching company website showing the before and after images of some hollywood stars. The results are bizarre and as one comment so rightly said 'The only reality is the illusion'.
Have a look at the retouching website by clicking here and go to the portfolio section. Just wave your mouse over the images to see the before and after effect.