National Geographic and Nerd Nite celebrated “Brain Games,” (premiering December 1), and previews of “Sharkfest” and “Gordon Ramsey: Uncharted” during the 2019 Comic-Con in San Diego. The event featured presentations from Cara Santa Maria, field host for “Brain Games”; Eric Leonardis, a human-robot interaction expert; imagination illusionist Eric Leclerc, and among others.