TFS Work-Item Fancy Filtering
If you want to create a TFS query that would identify work items that have changed, but were not changed by the person working it, there is a nifty way to do this.The filtering field can be set to <> another field that is available, but the syntax/setup in Visual Studio is not intuitive. It's in the dropdown list, but I'd never noticed it before!
Note that you don't include brackets on the assigned to field, and that the <> [Field] is not a placeholder for you to type the field name in, it's actually the literal command for it to parse this correctly.