blogs.wsj.com — Actor Samuel L. Jackson's Olympic tweets are as exuberant as his acting. That is to say, they're a Royale with Cheese. The "Pulp Fiction" actor spent the evening rejoicing for gold-medal winning gymnast Gabby Douglas and swimmer Michael Phelps on his page. "GABBY GOLD!GOLD!GOLD! U S GYMFUGGYNASTICS!!!! Go USA!