If your dock is unorganized and cluttered then these two commands are for you. The first command allows you to add an invisible space that gives room between applications. The second is a command that makes the application minimize into the application in the dock instead of next to the trash can. Again, to be a Real Mac Genius type in the commands.
Add in an invisible space:
1. Type in the following command into terminal: defaults write com.apple.dock persistent-apps -array-add '{tile-data={}; tile-type="spacer-tile";}'
2. Next insert the command: killall Dock
Minimize Applications into their icon:
1. Type in the command: defaults write com.apple.dock minimize-to-application -bool yes
2. Type in the command: killall Dock
Now your dock will be a little less cluttered thanks to these two simple commands.