While Kwame and Ma-Ti are supposedly inside the computer, you can see Kwame in the next shot, standing behind Gi, just before the doctor brings them back out of the computer.
During the scene when Dr. Derek transfers Kwame and Ma-Ti into the computer, if you listen closely for a few seconds, the background music sounds similar to the Underground theme from "The Adventures of Super Mario Bros 3."
The sequence of calling Captain Planet makes no sense in this episode. Kwame and Ma-Ti are INSIDE a computer program, which should mean their powers can't leave the computer. The remaining Planeteers are OUTSIDE the computer, and their powers shouldn't be able to get into the computer program, so summoning Cap shouldn't be possible. It seems that as long as Kwame commands the rings with "Let our powers combine," they can summon Cap no matter what.
(Dr. Blight and MAL prepare to inject a virus into Dr. Derek's computer) Dr. Blight: Are you ready MAL, sweetie? MAL: Just say "when", Doctor. Dr. Blight: NOW!!! MAL: A-Ah-Ah...I told you to say "when", Doctor... Dr. Blight: (agitated) Just do it MAL, or I'll reduce your hard drive to softserve!
This could be the most unusual instance where Captain Planet is summoned.....inside a computer!
Captain Planet's entrance when summoned:: A simple, short sequence of light effects.
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