On the Advanced Timesheet you can view Invalid worklogs and previously created JIRA Filters. To have a filter available the current user needs to have the filter in the favorite list.
Overview of the Advanced Timesheet for a Filter (click to enlarge)
By default, the advanced timesheet displays one row for each user who logged work to the JIRA issues in the filter search result. You can expand the information of a user to view the logged JIRA issues.