by Claudine Zap A quick-draw Twitter finger. Speaking out on behalf of that underdog, James Cameron . Oprah Winfrey 's secret past. Celebrity snipe is breaking out all over. Here, your Buzz roundup of the latest star-studded spats. Put a sock in it, Jim Carrey Does Carrey need a Twitter intervention? The guy first decides to announce the end of his relationship with Jenny McCarthy with a Twitter post. (You're welcome?