Misc: What commercial was Michael Jackson singing for when his hair caught on fire??

Questions

Psychology - Approximately how many dreams does a person have every year?

Psychology - Of what did Sigmund Freud have a morbid fear?

Psychology - Who wrote 'Sexual Behavior In The Human Male' in 1948?

Psychology - With what branch of medicine is Franz Mesmer associated?

Railways - New York has the longest subway system in ?