AP - For now, Ashton Kutcher is the king of Twitter. But there is a new challenger — Oprah.

AP - Throughout his tax evasion trial, Brazilian race car driver and "Dancing With The Stars" champ Helio Castroneves talked of his desire to get behind the wheel again.

AP - Guest lineup for the Sunday TV news shows:

AP - "One Tree Hill" actor Antwon Tanner has pleaded not guilty to involvement in a Social Security scheme.

AP - Oprah Winfrey sent her first "tweet" during a taping of her television talk show.

AP - Liz Lemon's brief flirtation with the Ladies Who Lunch left her with a shiner.

AP - Speculation abounded about Heidi Klum's pregnancy — and the supermodel's husband Seal couldn't keep it secret for long.

AP - Green Day's Billie Joe Armstrong says the Grammy-winning band was almost too hot for "American Idol" to handle during a performance on the show a few years ago.

AP - A judge is giving the son of Farrah Fawcett and Ryan O'Neal one last chance to kick his drug habit.

AP - Ashton Kutcher is the Twitter king.

AP - Brazilian race car driver and "Dancing With The Stars" champ Helio Castroneves was acquitted Friday of most charges that he worked with his sister and lawyer to evade more than $2.3 million in U.S. income taxes.

AP - Contestants on "The Biggest Loser" aren't just overweight. They suffer from being not normal and even half-dead.