Mr. Clapp , who lives in Los Angeles and who played the gently neurotic Detective Greg Medavoy for all 12 seasons of '' NYPD Blue , '' is here in Manhattan until the end of August , jammed into Mr. Tambor 's dainty one-bedroom on the Upper West Side with his girlfriend , Susan Karlin , as well as his golf clubs , her hair dryer , her shoes , his Dylan Thomas CD 's , his Mac laptop and hers , and six ties . ''