Behind every great Two and a Half Men episode, there's a great (and very blond) woman! That's the takeaway from last night's TV ratings, given that Miley Cyrus' first guest appearance on Ashton Kutcher's CBS sitcom lead the show to season-high numbers. Her debut episode brought in 13.6 million viewers and a 4.0 rating in the adults 18-49 demo, a 14 percent jump from last week.