It may happen you have the need of rolling back a previous changeset (due to various reasons). As far as today, you could do it with Get Latest Version – compare – Merge&Fix. Fairly rough, and not intuitive.
To be honest, this feature existed since Team Foundation Server 2010. It was just tf rollback, and no GUI was provided.
Then the PowerTools integrated it with Visual Studio, but now it has been promoted as a first class feature in Visual Studio 2012.
The time machine (as I called it) works as following:
Then you get it inside the Pending Changes, and you only have to check it in the Team Foundation Server. It’s possible to rollback even selected changesets, ranges, etc.