In Visual Studio 2010, I was able to view the check-in history of a particular user from
Team Explorer -> Team Project -> Team Members -> Right-click on a user name -> Show Check-in History
.
I just can't find such option in Visual Studio 2012/2013 after the drastic Team Explorer UI re-design.
You should install TFS Power tools 2012 (download here).
However, the Team Members Power Tool was changed to take advantage of new TFS 2012 features. As such it is incompatible with TFS 2010 and earlier and does not run off the same team member definition data as the TFS 2010 Team Members Power Tool, making using the VS 2010 IDE and VS 2012 IDE together with the Team Members Power Tool a bit of a pain (double administration).