According to James Rolfe on the Angry Video Game Nerd Vol. 2 DVD commentary, the original ending was going to involve a longer chase sequence, which would result in Leatherface getting stuck on some rocks, and The Nerd would then decapitate him with his own chainsaw. But the plan was cut short because the sun was setting.
Most of the questions that the Nerd is being bombarded with by Chop Top are examples of the most popular questions James Rolfe gets asked about the show on a daily basis. Chop Top even asks if he's going to review E.T. for the Atari 2600, the Nerd's most requested review of all time.