  A brief review of key recent developments and ongoing projects in
perturbative QCD theory, with emphasis on conceptual advances that have the
potential for impact on LHC studies. Topics covered include: twistors and new
recursive calculational techniques; automation of one-loop predictions;
developments concerning NNLO calculations; the status of Monte Carlo event
generators and progress in matching to fixed order; analytical resummation
including the push to NNLL, automation and gap between jets processes; and
progress in the understanding of saturation at small x.
