Profit's exploration of Gracen&Gracen's interface is done through a 3D-image rendering interface, which represents the entire company as a building with a series of offices. This is VRML (Virtual Realilty Modeling Language) which was, at the time, believed to be the way that future websites would be built.
Series creators David Greenwalt and John McNamara state in the Kills featurette on the 2005 DVD releases, Profit's traumatic upbringing was based on the childhood of a real-life serial killer who had been similarly raised in a box with only a television present as described in the nonfiction novel Whoever Fights Monsters: My Twenty Years Tracking Serial Killers for the FBI by Robert K. Ressler & Tom Shachtman. The relevant passage is located in Chapter 4 titled Childhoods of Violence: "One woman propped her infant son in a cardboard box in front of the television set, and left for work; later, she'd put him in a playpen, toss in some food, and let the TV set be the baby-sitter until she came home again."
The trivia item below may give away important plot points.
Creators David Greenwalt and John McNamara gave details of plot lines from the never-produced second season in the audio commentaries on the Region 1 DVD. These include: Joanne Meltzer dies early in the first episode of the second season while in Ireland looking into Profit's background. The phone booth from which she is calling Sykes is set to explode. There is a bomb planted there by the Irish Republican Army. It was to be revealed later that this was done at the behest of Profit. Jim has stolen the identity of a "real" Jim Profit. The "real" Jim Profit is in a coma after he was drowned by the protagonist Jim Profit. Later on, the protagonist would return to finish killing his alias. Charles "Chaz" Gracen has a heart attack while running on his treadmill due to a mild poison Profit slips into Chaz's water bottle. Profit eventually convinces Chaz that his father (who is the Chairman of G&G's Board of Directors) is trying to kill him. Profit engineers the death of Chaz and Pete Gracen's father to help the two brothers reconcile their differences, eliminate a troublemaker on G&G's Board of Directors, and help tighten Profit's control over G&G. Another storyline involved Profit getting a current Senator drunk to the point of blackout, staging a car accident, and convincing the Senator that he had killed someone. These events probably led into a related storyline where Pete Gracen becomes a Senator himself. Pete and Nora Gracen would have divorced.