LOS ANGELES (Reuters) - Talk show host Ellen DeGeneres said she was "proud and happy" that retail store J.C. Penney had stood by her in the face of a conservative anti-gay campaign, and said there was no such thing as a "pro-gay bandwagon." Breaking her silence on the furor, DeGeneres, one of America's best known gay celebrities, also poked fun at the One Million Moms group who had urged J.C. Penney to drop her as a spokeswoman because she is a lesbian and said they would boycott the store. "For those of you are just tuning in for the first time, it's true. I'm gay. ...