Completely uninstall mysql from Mac OS X

Remove mysql, prefpane item, startup item.
then:

sudo rm -rf /Library/Receipts/mysql*

There is a good complete explanation of this here.

Mac OS X command-line launchd control of mysql

To start, stop and disable mysql server from the command line:

# start
sudo launchctl start com.mysql.mysqld
# stop
sudo launchctl stop com.mysql.mysqld
# Unload
sudo launchctl unload /Library/LaunchDaemons/com.mysql.mysqld.plist

The Greatest Logo Ever

From RailsConf – Ben Scofield showed this, the greatest logo ever. Viget Labs had a bowling competition with a startup and needed a logo for their team. So they told one of their designers to create the most awesome logo ever. Note dinosaur with hatchet, shark with nunchucks etc. Awesome indeed.