launchd plist for running a SOCKS proxy with an autossh tunnel wotsit.

autossh.plist

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
 <key>Label</key>
 <string>swinton.autossh</string>
 <key>KeepAlive</key>
 <dict>
  <key>NetworkState</key>
  <true/>
 </dict>
 <key>RunAtLoad</key>
 <true/>
 <key>ProgramArguments</key>
 <array>
     <string>/usr/local/bin/autossh</string>
     <string>-M</string>
     <string>20000</string>
     <string>-D</string>
     <string>9999</string>
     <string>steve@212.48.81.37</string>
     <string>-N</string>
 </array>
 <key>StandardOutPath</key>
 <string>/Users/steve/Logs/autossh/autossh.stdout</string>
 <key>StandardErrorPath</key>
 <string>/Users/steve/Logs/autossh/autossh.stderr</string>
 <key>User</key>
 <string>steve</string>
 <key>ThrottleInterval</key>
 <integer>30</integer>
</dict>
</plist>

Also, this.