My mother told me she's seen my INTJ father cry three times since she's known him.
1) When he found out his first child, my sister, was born with a circulatory disorder and would have to have risky open heart surgery in the first week of her life. (She was fine.)
2) When my younger brother had a seizure and the doctors said he had a 30% chance of serious brain damage (he was fine.)
3) When Mr. Spock died in Star Trek II.