Here's a scary thought. The only day John Travolta says he feels completely comfortable going out in public is Halloween. "I've been famous for 22 years this month, and there's really not a place in the world I can go without being recognized." Unless, of course, it's Oct. 31. "I actually like going out on Halloween," says Travolta, from the L.A. set of his next movie, "The General's Daughter." "This year, I'll go out with my kid (5-year-old son Jett) in the Santa Monica flats and go trick-or-treating." His costume? "The Grim Reaper. It's got a big hood and a black cloth that covers my face, so nobody can see me."