I know what your thinking, can’t this be done in system settings? Well yes and no, you can disable the bouncing icons at application launch, but every time a programs wants your attention, it’s icon starts bouncing. This can be a little annoying, and to disable bouncing icons all-together type the following in the terminal:
defaults write com.apple.dock no-bouncing -bool TRUE
This willl disable it, and restart the dock to apply the changes.