We at CitySeen are glad to hear that writing columns for a newspaper can prepare us for bigger and better things, such as starring on the silver screen. That's what Ted Thomas has been up to, we hear. Thomas, a veteran of Hong Kong broadcasting and former Post columnist who is now chief executive of his own public relations firm, has spent the past two weeks in Shanghai playing a small role in the new Hollywood-produced movie Ultraviolet. Colleagues at his firm say Thomas, 74, has a small talking part as a curmudgeon general in the movie, which stars model-turned-actress Milla Jovovich as a woman trying to protect a little boy who is marked for death. The movie is set in the late 21st century, at a time when a civil war rages between humans and vampires.