When working regularly with Sonata bundles, you’ve might come accross their MediaBundle, which integrates a media management module. You certainly recognized that there is something different in the list view: A tabbed navigation to filter media items. This is how it looks like in the current 2.3 branch:
Screenshot of the Sonata Demo
I think this is very useful, because you can filter very quickly – literally with one click – instead of wasting three steps on the datagrid (focus widget, select/type value, click filter button). Unfortunately the tab feature is not documented, so I tried to figure out how it works. Here is a tutorial how you can add filter tabs to your own Sonata Admin modules.