I set the Mac OS dock to auto-hide and it frees up, like, an inch of space. Blows me away when I see people with the default-sized dock always open. Any real reason for this?
Then forget about the Dock and use Spotlight, I launch whatever I need in less than a second.
On the Air I only use max-size windows & on the Pro I use tiles and panes.
defaults write com.apple.dock tilesize -integer 1; killall Dock. defaults write com.apple.dock autohide-delay -int 0
defaults write com.apple.dock autohide-time-modifier -int 0
killall Dock