http://www.recordonline.com/apps/pbcs.dll/article?AID=/20080104/ENTERTAIN/801040317/-1/ENTERTAIN08 10. XM Studios, 111 W. 57th St., NYC — New York visitors regularly line up to see TV show tapings. Attending a free radio broadcast? Not so heard of. But if you follow the "Opie and Anthony Radio Show," you know where to go to see and possibly meet some of today's biggest comedians or even a celebrity such as John C. Reilly or Slash. O&A allow fans into a state-of-the-art XM radio studio to watch them broadcast two to three uncensored hours of comedy every day. Go at random and hope for the best or scour the Web site for clues about who'll be on-air the next few days.