At the part where Inez pinpoints that the island was surrounded by water, Inez's purple over shirt was pink.
At the beginning at control central, you can see a little bit of the Grim Wreaker in a few shots.
When Inez said "Right, and I'm Xena, Warrior Princess." skeptically and Digit said "Hacker's got Dr. Marbles!", they did not move their mouths.
Hacker: Why, Digit. I didn't know you still cared.
Cybersite: Topsy-Turvy Island
For Real Clip: Gorillas in the Midst
Math Topic: Navigation
Inez: Right, and I'm Xena, Warrior Princess.
This is a reference to the 1996-2001 show, Xena Warrior Princess.