  Hard scattered partons are predicted to be well calibrated probes of the hot
and dense medium produced in heavy ion collisions. Interactions of these
partons with the medium w ill result in modifications of internal jet structure
in Au+Au events compared to that observed in the p+p/d+Au reference. Full jet
reconstruction is a promising tool to measu re these effects without the
significant biases present in measurements with high-$\pT$ hadrons.
  One of the most significant challenges for jet reconstruction in the heavy
ion environment comes from the correct characterization of the background
fluctuations. The jet mome ntum irresolution due to background fluctuations has
to be understood in order to recover the correct jet spectrum. Recent progress
in jet reconstruction methodology is discu ssed, as well as recent measurements
from p+p, d+Au and Au+Au collisions at $\sqrt{s_\mathrm{NN}}=200 \gev$.
