Leslie is the grandaughter of famed Disney animator Ub Iwerks. She is also the producer of the documentary film "The Hand Behind the Mouse: The Ub Iwerks Story" (1999) as well as similarly titled book, co-written with John Kenworthy (2001). Her father, Don Iwerks, is the co-founder of Iwerks Entertainment, a leading developer of special venue and virtual reality theaters throughout the world.