I have a frequent problem where my VIM window is too large for my macbook screen but it fits on my external monitor, so when I unplug the external the VIM file bar gets stuck behind the Mac OS menu bar. It's a huge pain to fix this normally, but I wrote/stole an applescript to fix the problem:

try    tell application "Vim"        activate    end tell    tell application "System Events"        tell process "Vim"            set size of the first window to {1000, 200}            set position of the first window to {50, 50}        end tell    end tellend try