To use, type 'dmoz' & space, and a query term into the Omnibox. timothytocci.com
Allows you to search the Mozilla Open Directory Project (dmoz.org) from the omnibox. To use just type 'dmoz', a space, and your query term. It will open up a new tab with the search results of your query.
To see the code for this addon go to http://timothytocci.com/