Seems many folks are confused by the wealth of Photoshop choices on the market... (Do I need Elements or Extended?) With five different products baring the Photoshop name, a little bit of sorting is in order.
Fortunately Adobe has all five products compared on one single page to make your shopping process a little easier. What's nice is that they clearly break down the features as well as the target industries and activities for each program.
While you're there, you can read a quick blurb on Photoshop’s 20 year history.