According to the audio commentary, there was originally going to be a scene which showed Plankton taking out SpongeBob's brain before he puts it in the robot.
Plankton breaks the fourth wall in this episode when he says "I put the brain in the robot you know" he looks at the camera
Unlike in the SpongeBob comic 'Shake-O-Rama!', SpongeBob is asked to make a Krabby Patty for Plankton. In 'Shake-O-Rama!' he has no problem making chum recipes.
Although This Episode Premiered In 2001 It Was Made In 2000 According To The Credits