Steve Bulpett of the Boston Herald reports that hall-of-famer K.C. Jones is battling prostate cancer.  Jones, 69, was a member of eight Boston championship teams.  The prognosis for a complete recovery is good.  "I got it, but they caught it early enough," Jones said from his home in Connecticut.  Thank goodness for regular check-ups, even if a prostate check is worse than a visit to the dentist.