One use of the information radiator displays the Hindsight rapid board view. This board has a column to show features branches (issues) that need to be merged back to master and we conduct peer code reviews at this stage (using pull requests) and the non-assignee will perform the merge and close the issue. We use JIRA workflow rules to enforce this with the help of the visual workflow designer.
Hindsight, a startup in the London Silicon Roundabout, are a great example of how Atlassian software has helped companies get productive quickly. Our GreenHopper and JIRA software help Hindsight manage their work and focus on the most valuable activities to gauge how much return they are getting from the investment they put into their ideas.