Jets in PHENIX. The dense medium created in AuAu collisions at RHIC significantly suppresses particle production from hard scattering processes and their characteristic back-to-back angular correlation. I discuss the recent results on jet properties extracted from two particle correlation methods in pp, dAu and AuAu from PHENIX experiment. The jet properties are found to be similar between pp and dAu, but the jet width are significantly broadend in AuAu collisons. Recent theoretical progresses in this front are discussed.