  Heavy flavor research is a vigorous and active topic in high-energy QCD
physics. Comparing theoretical predictions to data as a function of flavor
provides a unique opportunity to tease out properties of quark-gluon plasma. We
explicitly demonstrate this utility with energy loss predictions based on the
assumption of 1) a weakly-coupled plasma weakly coupled to a high-pT probe
using pQCD and 2) a strongly-coupled plasma strongly coupled to a high-pT probe
using AdS/CFT; we find that while the former enjoys broad qualitative agreement
with data, it is difficult to reconcile the latter with experimental
measurements.
