LOS ANGELES (Reuters) - Gay and political films are dominating this year's Academy Awards race with some experts expecting that Oscar will wind up wearing pink, either for left-leaning politics or sexual preference. As Hollywood starts its annual awards season leading to the March 5 Oscars, key front-runners in main categories are either gay-themed or political films, with Ang Lee's "Brokeback Mountain," a drama of love between cowboys, leading the pack in the all-important best picture race. "It could be the gay Oscars this year because gay-themed movies could win almost all the major awards," said Tom O'Neill, show business...