May 22, 2003, 8:45 a.m. My Evening with Castro The experience of a lifetime. By Cheryl Flake Oliver Stone calls him "one of the earth's wisest people." Jack Nicholson has dubbed him a "genius." "An experience of a lifetime" is how Kevin Costner described his own meeting. I recently spent an evening with the same man, Fidel Castro. I came away convinced it must be more than Cuban cigars that these Hollywood types are smoking on their visits to Havana. Two months ago I accompanied my husband, Rep. Jeff Flake, and seven other members of Congress on a visit to...