I tried GitPrime and thought it was extremely well done. If you ignore the obvious use case of management using it for bean-counting, if you work with 10, 25, 50+ developers it really reveals some enlightening patterns.
It is fairly expensive, however. Starts at around $10k/year which can make it a tough budgetary sell.
I wonder if they'll price it in with Pluralsight as a package or keep it independant.