Dominican/Puerto Rican actress Zoe Saldana belongs to a rare and privileged club, where a small click of actors films rank in the top 3 box office movies of all time. Avatar is the leader in that category and she’s its key co-star. She is literally on top of the world. Her huge blockbuster films have put her on the lips of every top producer and director in Hollywood as well as a profusion of money in her bank account. As she nears the release of another gi-normous franchise film in “Star Trek Into Darkness,” where she plays Uhura, she seems to be in a reflective mood about life, work and her place in it.