The character of Jeff is based on Jeff Goldblum's character David Levinson in the 1996 film Independence Day. Direct reference is made to the character when Jeff proposes creating a computer virus to destroy the alien wrecking crew's ship.
The character is also based off of Dr. Ian Malcom, a character that Jeff Goldblum played in the 1993's Jurassic Park. Dr. Macolm specialized in Chaos Theory. Jeff's constant word association is based off of this idea.