Season 4
38 episodes · premiered Nov 22, 2002
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E1 Beau Tie
Dee-Dee has a new boyfriend who also likes science and Einstein, and soon the boy finds himself caught in a vicious tug of war...
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E2 Remember Me?
Dexter is hit by a wrench while working on a device, and suffers amnesia, Dee Dee decides to mess with his head
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E3 Overlabbing
Dexter and Mandark drill underground to expand their labs, but end up overlapping each other's work. They secretly devise a plan to destroy each other.
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E4 Sis-Tem Error
Dee Dee accidentally breaks down Dexter's lab, and she tries to not and let him know its broken.
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E5 Bad Cable Manners
Dad wants cable really bad, so Dexter illegally pirates cable for him.
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E6 Dexter's Library
When Dexter becomes the head of a library, he inforces the rules really hard, driving everyone crazy.
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E7 The Scrying Game
Dee Dee learns a new game that can ""predict peoples futures"". She uses it on Dexter, and finds out that the game REALLY DOES predict peoples futures...
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E8 Monstrosi-Dee Dee
A Monster starts roaming Dexter's lab, although Dexter doesnt know its just Dee Dee, who ate an apple in a failed lab experiment.
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E9 Dad Man Walking
Dexte'rs father begins to sleepwalk, and accidently stumbles into Dexter's Lab
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E10 Dexter's Little Dilemma
Dexter accidentally shrinks his parents, and puts them into a model of there house. Although the house isnt completed, so Dexter must find a way to reverse it before they know the truth.
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E11 Faux Chapeau
Dexter creates a new invention and wears it on his head. It suddenly becomes the latest fashion craze at Huber elementry.
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E12 D²
Dexter and Dee Dee realise when they work together, they make a pretty good team.
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E13 Head Band
Dee Dee has a song stuck in her head. Literally.
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E14 Stuffed Animal House
Dee Dee's stuffed animals come to life and roam the house. Dee Dee and Dexter must get them before Mom and Dad find out.
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E15 Used Ink
Dexter creates an ink in which lets him command them to do whatever he wants them to do. Although when Mandark gets a hold of it, Dexter is the one being the slave.
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E16 School Girl Crushed
Decxter and Mandark are both outperformed by a new girl attending the school, jealous, they become allies to deal with her.
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E17 Chess Mom
Mom thinks she should spend quality time and watch Dexter in his chess comatition. Although, she really embarasses Dexter while hes there...
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E18 Father Knows Least
Dad gets fired from his job, and has to do the same job Mom does. He realises it isnt as easy as it looks.
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E19 Dexter the Barbarian
Dexter goes on a quest. His quest is to reach the bathroom before he explodes.
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E20 Tuber Time
When Dexter realises the power of the potato, he redesigns his lab to work on it.
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E21 Sore Eyes
Dexter is tired of wearing glasses, so he uses laser surgery on his eyes to make him have 1/20 vision. Although, he learns than no human should be able to see THIS well...
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E22 Babe Sitter
Dee Dee goes over to Mandark's house to baby sit him, and Mandark likes that idea.
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E23 Mountain Mandark
Mandark drops technology and starts being more in touch with nature.
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E24 2Geniuses 2Gether 4Ever
Dexter decides its better if him and Mandark work together, although in the end Dexter does all the work while Mandark does nothing
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E25 Height Unseen
Dexter is tired of being short, since his old plan of growing himself didnt work, he decides to make everyone shorter than him.
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E26 Bygone Errors
This takes place in the future, where Old Man Dexter tells about his ""glory days"". And Old lady Dee Dee keeps on adding her opinions as well...
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E27 Folly Calls
When Dee Dee accidentally chops off her pigtail, Dexter gives her some hair growth potion. Although when she uses it, her hair floods the entire house.
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E28 Voice Over
When Dexter's Computer gets Laryngitus, Dexter must find a replacement voice for her.
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E29 The Blonde Leading the Blonde
Dexter refuses to see that blonde's have more fun, so he dyes Dee Dee's hair to prove it.
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E30 Comic Stripper
Dexter finds out that all of Mandark's plans are taken from a comic book. This way, he can get ready.
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E31 Tee Party
Dexter and his dad enter a Golf tournament, with Dad eager to get his hands on the Trophy, but there is one problem: he is hopeless at Golf, so Dexter decides to help with a remote controlled Golf ball
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E32 Dexter's Wacky Races
Dexter, Monkey, The Justice Freinds, Dee-Dee, her imaginary freind Coosie, Mandark, his parents, and Dexter's Parents participate in a cross-country race
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E33 The Lab of Tomorrow
Monkey narrates a documentry of the future of Laboratories and sciences.
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E34 Chicken Scratch
Dexter catches the chicken pox, and Dee Dee tells him a ridiculous tale that if he keeps scratching them, he will turn into an evil chicken. His nonstop scratching eventually does just that.
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E35 Garage Sale
Dexters parents accidentally sell Dexter's latest invention, and it is bought by Mandark.
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E36 They Got Chops
Dee Dee starts layin' down the Judo on Dexter, then Dexter learns how to fight back.
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E37 Poetic Injustice
Dexter falls in love with a new girl at his school, but decides to impress her with poetry rather than science.
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E38 Comedy of Feathers
When Dee Dee sees an Ostrage at the Zoo, she wants one of her own as a pet.