Get a list of all users who have checked files into a TFS Project
Have you ever wanted to get a list of all the users who have ever checked files into a TFS instance? Here's how to do so from PowerShell:
tf history * /format:detailed /recursive /noprompt | Select-String "User:" | Sort-Object | Get-Unique
Note that if you want this to appear in a GUI window, drop everything starting from "/noprompt".