  The current experimental situation concerning high pt observables at the CERN
SPS is reviewed. Recent data from the NA45, NA49 and NA57 collaborations are
discussed and compared to earlier measurements by WA98 and NA45 at the same
center-of-mass energies, as well as to measurements at the higher energies by
the RHIC experiments. The observables include new p+p, A+A spectra, nuclear
modification factors (R_AA, R_CP), two particle azimuthal correlations, and
baryon to meson ratios at moderately high pt. Generally, the interpretation of
the SPS data suffers from the lack of reliable baseline measurements (p+p and
p+A). However, the overall picture that is emerging suggests that already at
SPS energies medium effects similar to those observed at RHIC are present.
