You don't have to overstuff your dock as it is.
Whats quicker:
Hit CMD + Space, type 'Photosh' then enter - Photoshop Opens
OR
Click 'LaunchPad' in your Dock, Scan the page (or pages if you have a lot installed) for the 'Photoshop CS5' Directory, open the Directory, Click the 'Photoshop.app' icon.
See the point here? Its a very slow way of launching apps.
I'll give it a few months before it goes the same way as Dashboard...I.E being a feature hardly anyone uses.
Or just put in your dock and click once...