Director Jerry Zucker was brought in to shoot new footage, according to Patrick Goldstein in the Los Angeles Times on 10 August 2007
The name of Joan Cusack's character (Liz) is the same one as of her character in High Fidelity (2000), which also features her brother John Cusack in the lead role.
An early novel by screenwriter David Gerrold was called "When H.A.R.L.I.E. was One." Amanda Peet plays a character named Harlee.