1.) Always view Mail.app attachments as icons.
defaults write com.apple.mail DisableInlineAttachmentViewing -bool yes
Restart Mail.app, and voila!
2.) Use a spacer to split the Dock between Docked applications and non-Docked applications.
defaults write com.apple.dock persistent-apps -array-add
'{"tile-type"="spacer-tile";}' && killall Dock
3.) Add one or more stacks of recently used items.
defaults write com.apple.dock persistent-others -array-add
'{ "tile-data" = { "list-type" = 1; }; "tile-type" = "recents-tile"; }'
&& killall Dock
4.) Enable new List view in Dock Stacks.
defaults write com.apple.dock use-new-list-stack -bool yes
&& killall Dock
5.) Enables gradient effect on mouse over.
defaults write com.apple.dock mouse-over-hilite-stack -boolean yes
&& killall Dock
five Mac OS X Snow Leopard Tweaks I Can’t Live Without
27Feb111.) Always view Mail.app attachments as icons.
Restart Mail.app, and voila!
2.) Use a spacer to split the Dock between Docked applications and non-Docked applications.
3.) Add one or more stacks of recently used items.
4.) Enable new List view in Dock Stacks.
5.) Enables gradient effect on mouse over.