  Small, but significant non-random fluctuations in event-by-event average
$p_T$ have been observed in Au+Au collisions at $\sqrt{s_{NN}}=200$ GeV by the
PHENIX collaboration at RHIC. These are consistent with being caused by
correlations due to jets at large $p_T$, where the measured suppression must be
included to reproduce the centrality dependence of the non-random fluctuations.
