I wrote this article for ArticlesBase in August of 2008 and it is still getting hits! It is a simple way to whiten the teeth in an image using  Photoshop. I thought it would be helpful to reproduce it here and spread the info to more people. Hope it helps!
 
There is nothing quite so disconcerting as yellowish or [...]

This is a short lesson on lightening and brightening your sunsets using layers in Photoshop.