Born in Edmonds, Washington, Jennings grew up in Seoul, South Korea (1981?1992) and Singapore (1992?1996), where his father worked for an international law firm and then as Asia Pacific Division Counsel of Oracle Corporation. He watched Jeopardy! on the American Forces Network television while growing up.

Jennings graduated with a degree in computer science and English at Brigham Young University, where he played on the school's quiz bowl team for three years. He completed an International Baccalaureate diploma at Seoul Foreign School, and achieved honors at both Brigham Young and the University of Washington.

Jennings is a Mormon, a member of the Church of Jesus Christ of Latter-day Saints. He served a two-year mission in Madrid, Spain from 1993 to 1995.

Eesiding in Murray, Utah (a suburb of Salt Lake City), Jennings identifies himself as an avid comic book and movie buff with a website listing his top 2000 favorite movies. He also writes questions and edits the literature and mythology categories for the National Academic Quiz Tournaments (NAQT), a quiz bowl organization. He is a software engineer for CHG, a healthcare-placement firm.

--Wikipedia