The BEST episodes of The Adventures of Jimmy Neutron: Boy Genius season 3

Every episode of The Adventures of Jimmy Neutron: Boy Genius season 3, ranked from best to worst by thousands of votes from fans of the show. The best episodes of The Adventures of Jimmy Neutron: Boy Genius season 3!

Follows Jimmy Neutron, his faithful robotic dog, Goddard, and his eclectic friends and family as they experience life in Retroville. Jimmy is a typical kid, who just happens to be a genius. He creates gadgets to improve his everyday life, but his inventions go awry more often than not, and hilarious trouble ensues.

Last Updated: 9/23/2024Network: NickelodeonStatus: Ended
The Tomorrow Boys
star
7.58
12 votes

#1 - The Tomorrow Boys

Season 3 - Episode 3 - Aired 5/23/2005

Jimmy, Sheen, and Carl travel 15 years into the future, only to find that some things have gone wrong. Can they right the past to save their future?

Directors: Keith Alcorn
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Lights! Camera! Danger!
star
7.46
41 votes

#2 - Lights! Camera! Danger!

Season 3 - Episode 1 - Aired 11/27/2004

The gang enters a script-writing competition, where the winning script will get turned into a movie! The director, Quentin Smithee, chooses Jimmy, Cindy, Libby, Sheen, and Carl (much to Hugh's disappointment) to star in Jimmy's movie, which will be shot entirely in Retroville. During the filming, however, dangerous on-set "accidents" start to happen, and the rest of the kids start to doubt starry-eyed Jimmy and inexperienced Smithee.

Directors: Keith Alcorn
Writer: Steven Banks
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Best in Show
star
7.10
10 votes

#3 - Best in Show

Season 3 - Episode 23 - Aired 11/25/2006

Jimmy enters Goddard in a dog show. Goddard easily wins, but he is soon disqualified for being robotic ... so the canine runs away to let Jimmy get a real dog.

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My Big Fat Spy Wedding
star
6.91
11 votes

#4 - My Big Fat Spy Wedding

Season 3 - Episode 9 - Aired 7/22/2005

Jimmy's new mission from the BTSO is to follow Beautiful Gorgeous. He takes the job and he discovers that she and Jet Fusion are getting married!

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One of Us
star
6.90
10 votes

#5 - One of Us

Season 3 - Episode 12 - Aired 1/24/2006

A children's show has hypnotizing powers and turns the town of Retroville against Jimmy.

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El Magnifico
star
6.83
6 votes

#6 - El Magnifico

Season 3 - Episode 22 - Aired 11/25/2006

Mr. Estevez wants to impress his son, so he asks for Jimmy's help.

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Stranded
star
6.83
12 votes

#7 - Stranded

Season 3 - Episode 5 - Aired 5/26/2005

A trip gone wrong ends up turning even worse when Jimmy and Cindy get into an argument that winds up getting them stranded together.

Writer: Jed Spingarn
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Vanishing Act
star
6.67
9 votes

#8 - Vanishing Act

Season 3 - Episode 13 - Aired 1/24/2006

Jimmy tries to become a magician to impress Betty, but something goes horribly wrong, and he ends up transporting the group into alternate universes.

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Fundemonium
star
6.58
12 votes

#9 - Fundemonium

Season 3 - Episode 4 - Aired 5/24/2005

After the car company Hugh works for decides they don't need his services anymore, the Neutrons are faced with the awful prospect of moving. To stay in Retroville, Hugh becomes a toy inventor, and the Nanobots return again to wreak more havoc....

Writer: Tom Sheppard
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The Trouble with Clones
star
6.56
9 votes

#10 - The Trouble with Clones

Season 3 - Episode 14 - Aired 1/25/2006

Evil Jimmy returns! Jimmy needs his evil clone to "be" him so he can up his invention output by staying in his lab while the clone goes to school and spends time with his friends and family, so he tries to make the clone a "Good Jimmy." Of course, things go wrong and Evil Jimmy wreaks havoc around town....

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Crouching Jimmy, Hidden Sheen
star
6.50
8 votes

#11 - Crouching Jimmy, Hidden Sheen

Season 3 - Episode 10 - Aired 11/18/2005

A kung-fu warrior wants to be The Chosen One in the temple of Shangri-Llama, but Sheen holds that position, with his ability to put his leg behind his head. So, the warrior kidnaps Libby in order to fight with Sheen and claim the title of The Chosen One as his own.

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Jimmy Goes to College
star
6.45
11 votes

#12 - Jimmy Goes to College

Season 3 - Episode 6 - Aired 5/27/2005

Jimmy becomes frustrated at school when his scientific lecture is disregarded in favor of making macaroni sculptures. So, when Dean Cain, head of Pamona University, offers him a chance to enroll in that college to help them win a science grant, Jimmy eagerly accepts. He soon finds, however, that college is a completely different world from elementary school ... a much more challenging one. And when it comes to jealousy of Jimmy's knowledge, Cindy (left behind at Lindbergh Elementary) doesn't hold a candle to new classmate Seymour.

Writer: Jed Spingarn
Watch Now:AmazonApple TV
How to Sink a Sub
star
6.40
10 votes

#13 - How to Sink a Sub

Season 3 - Episode 19 - Aired 11/17/2006

Jimmy sends the teachers away for a week, so the parents decide to step in.

Watch Now:AmazonApple TV
Who's Your Mommy
star
6.33
9 votes

#14 - Who's Your Mommy

Season 3 - Episode 7 - Aired 6/20/2005

Carl gets infected by a "face-hugging" parasite, and becomes pregnant with an alien baby.

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The N Men
star
6.32
44 votes

#15 - The N Men

Season 3 - Episode 2 - Aired 11/27/2004

An encounter with the Van Patten radiation belt causes strange mutations in the kids: Jimmy glows orange, Cindy is super strong, Sheen is super fast, Libby can become invisible, and Carl has sonic burps. As the N Men, they work to fight evil in Retroville, but they end up doing more harm than good. The military soon steps in, capturing four of the kids, but only laughing at Jimmy's orange hue. When Jimmy discovers the dark side to his friends' new powers, he must race against time to find a cure - and deal with the effects of his power.

Directors: Mike Gasaway
Writer: Gene Grillo
Watch Now:AmazonApple TV
Incredible Shrinking Town
star
6.30
10 votes

#16 - Incredible Shrinking Town

Season 3 - Episode 11 - Aired 1/23/2006

Jimmy accidentally shrinks the town of Retroville. Can he get it back to normal size before they're crushed?

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Who Framed Jimmy
star
6.25
8 votes

#17 - Who Framed Jimmy

Season 3 - Episode 17 - Aired 1/27/2006

Someone's stolen a lot of money ... and the evidence points to Jimmy! Can Carl, Sheen, and Jimmy figure out who's framing the boy genius?

Watch Now:AmazonApple TV
Lady Sings the News
star
6.25
8 votes

#18 - Lady Sings the News

Season 3 - Episode 20 - Aired 11/17/2006

The kids become news anchors for a local television network. But Libby's gossip section soon proves to be horrifyingly embarrassing! Can the other kids put a stop to her before it's too late and all their secrets are revealed?

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Flippy
star
6.10
10 votes

#19 - Flippy

Season 3 - Episode 18 - Aired 1/27/2006

Hugh wants to become a ventriloquist, so Jimmy decides to give him a hand. But his modifications may cause a big problem for his father....

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King of Mars
star
6.00
7 votes

#20 - King of Mars

Season 3 - Episode 21 - Aired 11/25/2006

Eustace Strych is back, and he's still determined to humiliatingly defeat Jimmy. Now the race to find an energy source on Mars is on! Who will win?

Watch Now:AmazonApple TV
Carl Wheezer, Boy Genius
star
6.00
10 votes

#21 - Carl Wheezer, Boy Genius

Season 3 - Episode 16 - Aired 1/26/2006

Carl wants to impress a girl by making Jimmy seem stupid in comparison to him.

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Clash of the Cousins
star
5.67
12 votes

#22 - Clash of the Cousins

Season 3 - Episode 8 - Aired 6/20/2005

The Neutron family has gathered to celebrate Aunt Maybelline's birthday. When Jimmy's present explodes, everyone suspects him of foul play.

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The Evil Beneath
star
5.10
10 votes

#23 - The Evil Beneath

Season 3 - Episode 15 - Aired 1/26/2006

Jimmy travels to the Bahama Quadrangle (a parody of Bermuda Triangle) to solve the mysterious disappearances surrounding it.

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