Photoshop
Illustrator 
Dreamweaver
Flash
InDesign
After Effects
Premiere ProIncreasing the number of undos you have will give you more room for change in Photoshop CS4.
createObject(‘swf’,'/design/players/swfplayer.swf?video=videos/day469.flv’,'width’,’500′,’height’,’415′,’scale’,'exactfit’,'quality’,'high’,'allowScriptAccess’,'sameDomain’,'bgcolor’,'#ffffff’);
Author: Matt Kloskowski
Matt Kloskowski is the Education and Curriculum Developer for the National Association of Photoshop Professionals. He has authored and co-authored five books on Photoshop and Illustrator and teaches an advanced Photoshop course for Sessions.edu. In addition to being an Adobe Certified Expert in Photoshop and a Macromedia Flash Certified Developer, Matt is a regular contributor to Photoshop User and Layers magazines and writes weekly columns for several digital imaging websites.
I’ve set my history states to 1000 and after several hours of editing a single photo it still runs perfectly fine. No problems at all.