The Liquibase presentation at No Fluff Just Stuff was excellent. John Heintz showed how Liquibase removes hurdles to refactoring. Simply put, Liquibase is the tool that lets you version changes to your application code and the database together. Rollbacks and refactorings are a breeze.
With the IntelliJ plugin, Liquibase makes even more sense! See how ->
http://www.liquibase.org/swf/liquibase_intellij_plugin_short/liquibase_intellij_plugin_short.html