As you can see Sharepoint 2010 has the ability to sort the time entries by resource, by project, by week in the Timesheet system list management.
SharePoint 2010 TimeSheet System can multi sort time spend
Managing time, business tasks and activities for small and mid-size busisnesses and personal time management
As you can see Sharepoint 2010 has the ability to sort the time entries by resource, by project, by week in the Timesheet system list management.