Team System + Gadgets + Outlook
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.
*) Team System Build Monitor Gadget
Always be aware of the status of your TFS builds in the sidebar.
*) Two useful WorkItem Gadgets
Get the state of your open workitems, or the work items per project.