The Simpsons (1989– )
2 user

The Man Who Grew Too Much 

Lisa becomes friends with Sideshow Bob, who now has a new job working with genetically-altered foods. Meanwhile, Marge becomes frustrated teaching abstinence for the church.


Matt Groening (created by), James L. Brooks (developed by) | 3 more credits »


Add Image Add an image

Do you have any images for this title?



Episode cast overview:
Dan Castellaneta ... Homer Simpson / Groundskeeper Willie (voice)
Julie Kavner ... Marge Simpson (voice)
Nancy Cartwright ... Bart Simpson / Ralph Wiggum / Todd Flanders / Nelson Muntz (voice)
Yeardley Smith ... Lisa Simpson (voice)
Hank Azaria ... Coach Krupt / Narrator / Carl Carlson / Chief Clancy Wiggum / Kirk Van Houten (voice)
Harry Shearer ... Mr. Largo / Lenny Leonard / Jasper Beardly / Ned Flanders / Principal Skinner / Reverend Lovejoy (voice)
Kelsey Grammer ... Sideshow Bob (voice)
Marcia Wallace ... Edna Krabappel (voice)
Pamela Hayden ... Rod Flanders / Jimbo Jones (voice)
Tress MacNeille ... Lunchlady Doris / Shauna / Dolph / Jenny McCarthy / Monarno Research Woman / Mom At Museum / Old Lady / Various (voice)
Chris Edgerly ... (voice)
Maggie Roswell ... Miss Hoover (voice)


To her surprise Lisa finds herself championing GM foods and more surprisingly working alongside chief scientist Sideshow Bob, released from prison to research into the subject. However when Bob takes Lisa to a museum she learns that he is genetically modifying himself to become stronger in order to carry on with his nefarious activities. When Bart tries to rescue Lisa Bob takes them both to the Springfield dam, where Lisa has to appeal to Bob's sense of reason to avoid a watery grave. Written by don @ minifie-1

Plot Summary | Add Synopsis


Animation | Comedy


TV-PG | See all certifications »






Release Date:

9 March 2014 (USA) See more »

Filming Locations:


Company Credits

Show more on IMDbPro »

Technical Specs

Sound Mix:




Aspect Ratio:

16:9 HD
See full technical specs »

Did You Know?


The last appearance of Marcia Wallace as Edna Krabappel. See more »


[Flanders finishes reminiscing about Mrs. Krabappel]
Ned Flanders: Aw, I sure am gonna miss that laugh.
Nelson Muntz: Haw haw! I miss her, too.
See more »


References Apocalypse Now (1979) See more »


Let's Call the Whole Thing Off
Written by George Gershwin and Ira Gershwin
Performed by Kelsey Grammer and Yeardley Smith (as "Let's Splice Some DNA")
See more »

Frequently Asked Questions

This FAQ is empty. Add the first question.

User Reviews

12 August 2017 | by benko-duboveckySee all my reviews

Is it just me or are the episodes with Sideshow Bob getting more and more ridiculous every time? Seriously, Bob's character seems really chaotic to me. Where is he developing? Or are they just looking for more and more ways to make him only crazier? I don't know but to me, they could've quit with Bob in season 14. That episode had a good ending, and I would be totally okay with it, had it ended like this. But no, insanity must keep on going ... :(

3 of 5 people found this review helpful.  Was this review helpful to you? | Report this
Review this title | See all 2 user reviews »

Contribute to This Page

Free Movies and TV Shows You Can Watch Now

On IMDb TV, you can catch Hollywood hits and popular TV series at no cost. Select any poster below to play the movie, totally free!

Browse free movies and TV series

Stream Popular Action and Adventure Titles With Prime Video

Explore popular action and adventure titles available to stream with Prime Video.

Start your free trial

Recently Viewed