  Fully reconstructed jets and direct photon-tagged jet fragments significantly
reduce energy-loss bias, the bias toward mostly measuring particles from
partons which suffer little energy loss. In d+Au collisions, one accesses the
physics at large $x$, which yields important constraints for nuclear parton
distribution functions. In both d+Au and A+A collisions, coherent
multiple-scattering models of energy loss can be tested. In this contribution,
we present the current results from the PHENIX experiment on fully
reconstructed jets and direct $\gamma$-hadron correlations. Baseline
measurements of jets in p+p collisions as well as their yield and correlation
modifications in d+Au and Cu+Cu will be given. From $\gamma$-hadron
correlations, we present the fragmentation function in p+p and Au+Au collisions
and its modification in Au+Au to $z_T$ lower than what has previously been
studied. Implications of this data on our understanding of both cold and hot,
dense nuclear matter created at RHIC are discussed.
