Arguably the most powerful talent agency in the business, Creative Artists Agency (CAA) represents clients working in film, music, television, theater, sports, and literature. The firm's client list reads like a who's who of A-list stars, including such luminaries as Steven Spielberg, Tom Cruise, Brad Pitt, George Clooney, Oprah Winfrey, LeBron James, David Beckham, Will Ferrell, and now Ryan Seacrest. Other heavy-hitting clients include corporations such as Coca-Cola and toymaker Mattel. Supplemental services include strategic counsel, financing, and consulting. Its Intelligence Group/Youth Intelligence unit tracks and conducts behavior research for consumers from ages 8 to 39.