If you're using Team Foundation Server, these utilities might be useful for your everyday's work:

*) WorkItem Outlook Plugin

Create a workitem directly out of the mail view.

Download

*) Team System Build Monitor Gadget

Always be aware of the status of your TFS builds in the sidebar.image

Download

*) Two useful WorkItem Gadgets

My Team Foundation Server Tasks Gadget

Get the state of your open workitems, or the work items per project.

Download