Oprah Winfrey has done it. So has Ellen Degeneres. Jen-Hsun Huang got into the act too by giving all GTC 2014 participants an NVIDIA Shield. At the end of his keynote address on March 25, the NVIDIA CEO made the announcement to gasps and shrieks of joy from the audience. Those who were unable to be at the event can get the handheld Android device for US$199 for a limited period.