MythControls
From MythTV Official Wiki
MythControls is a plugin that provides the ability to edit MythTV key bindings from within the frontend.
See the announcement thread at http://www.gossamer-threads.com/lists/mythtv/dev/128914 for more details.
Note: Mythcontrols functionality will be merged into mythfrontend and no longer available as a plugin with the upcoming release of 0.22