What's on TV? Tuesday,

A ll this week on NBC's You Don't Say! , it's the battle of the doctors, as Dr. Joyce Brothers takes on Dr. Frank Baxter. Who is Dr. Frank Baxter? Well, in 1965 you would have recognized him. According to the always-reliable Wikipedia , "Baxter is best remembered for his appearances from 1956–1962 as 'Dr. Research' in The Bell Laboratory Science Series of television specials. These films became a…