Alex has the ability to levitate things with her fingers in this episode. In almost every other one, she uses her eyes.
In the series, Jessica Alba's character, Jess is portrayed as being much older than Larisa Oleynik's character Alex and a bully, in reality their birthdays are only about a month apart.
This is the only episode in the series where Alex Mack is seen without clothes after turning back from liquid form.
The secret chemical that gave Alex Mack her powers was called GC-161, GC standing for Gold Compound. Alex's Father was actually one of the scientists who developed the current GC-161 compound.