I would like to share with you this video tutorial that explains 4-5 very useful features found exclusively in CS5 photoshop. I'm sure this tutorial will convince those sceptics that CS5 is without a doubt better than CS4.
I really admire those software engineers. The AI in CS5 is mind boggling... It's truely an engineering masterpiece. How did they manage to create content-aware-fill?
http://tv.adobe.com/watch/photoshop-...-cs5-features/