GeditBzr is a plugin for Gedit that integrates Bazaar, developed by Javier Derderian (JavierDerderian).
The aim is to bring to Gedit all the benefits of Bazaar's helpfulness on the colaboration problem
You can get this plugin from http://launchpad.net/bzr-gedit
Checkout our Roadmap: GeditIntegration/Roadmap
Right now i'm working in Step #6, adding detailed settings to commands - like push a specific revision- , you can check the roadmap here
This is a screenshot of an older version menu, it includes all basic bzr functions, lots of the deep bzr functions and some of the best bzr-gtk functions:
Commit dialog
Push dialog
(pull dialog is almost the same)
New dialogs have been created for version 0.47:
A "Branch settings" dialog, to edit branch settings fast and easy: 
And a "New workspace dialog", to create a new bazaar branch/repository in a few clicks:
This is the 'project browser' sidebar:
