Burke’s Law. 81 episodes in the early 60s. 27 episodes in the mid 90s. Both starring Gene Barry.
Perry Mason ran from 1957 to 1966. 30 Perry Mason tv films ran from 1985 to 1995. Cast members Raymond Burr and Barbara Hale returned for those. There were a few more Perry Mason films after Burr died with Hale appearing briefly in some.