History Recap / HeyArnold

# The Beeper Queen / Oskar Can't Read: When Big Bob has a heart attack, the usually scatterbrained Miriam steps in as the owner of Big Bob's Beeper's and proves to be a stellar businesswoman; Arnold helps Oskar learn to read.

# Mugged / Roughin' It: Arnold takes karate lessons after a petty thug robs him on the bus; Arnold, Gerald, Grandpa Phil, Helga, and Big Bob go camping

# Magic Show / 24 Hours to Live: Arnold chooses Helga to be an assistant for a magic trick, but an accident sends Helga into an alternate universe where she's never born and everyone is better off without her; Arnold accidentally angers school bully Harold and is challenged to fight him.

# Career Day / Hey Harold!

# Big Gino / Jamie O. in Love

# Suspended / Ernie in Love: Harold gets himself suspended by his own free will, but realizing how boring it is, he tries to get back in to school;

# Beaned / Old Iron Man: Helga gets amnesia by Arnold who accidently hits her with a ball, and when she regains it, she still fakes it so she can spend time with Arnold who feels he owes her;

# Harold vs. Patty / Rich Guy: Harold gets beat by arm wrestling by Patty and gets teased about it, so he asks her for advice on how to become a better arm wrestler for the Arm Wrestling Tournament;
# April Fools' Day; Arnold temporarily gets Helga blind by an April Fools Prank, but after regaining eyesight she still fakes it so Arnold will spend more time with her as she feels he owes her, as well as take her to the April Fools Prom.

# Married: By a marriage prediction by Rhonda, Arnold and Helga find out they will get married in the future. Having very mixed reactions to it, they wind up having a nightmare and a wonderful dream about it, respectively;

# Ghost Bride / Gerald vs. Jamie O.: Gerald tells the legend of the Ghost Bride, and soon the tale seems to be real;
# A Day in the Life of a Classroom / Big Bob's Crisis
# Grandpa's Packard / Phoebe's Little Problem: Grandpa Phil worries about his car; Phoebe accidentally farts in class.

# Best Man / Cool Party
# Arnold and Lila / Grand Prix

# Part-Time Friends / Biosquare
# Phoebe Takes the Fall / The Pig War

# Girl Trouble / School Dance: Arnold deals with his issues regarding Helga;

# Full Moon / Student Teacher

# Eugene's Birthday / Stinky's Pumpkin

# Dinner for Four / Phoebe Skips

# Love and Cheese / Weighing Harold: Arnold asks Lila out to the Cheese Festival, and Helga tries to sabotage their date;

# Bag of Money / Principal Simmons: Arnold, Gerald and Sid find a bag of money in a garbage can that they decide to return to the police, and Arnold holds onto it for the time being, but he loses it by a mix-up and soon Sid believes that he used up all the money that causes everyone's reliance on Arnold to falter;

# Parents' Day: Arnold competes with his grandparents in a Parents Day Tournament, but soon feels torn about his parents' abandonment and feel reluctant if he should keep participiating or not;
# Summer Love

# Arnold Visits Arnie / Chocolate Boy: Arnold visits Arnie only to discover different personality counterparts of his classmates, including Lila (Lulu) and Helga (Hilda);

# April Fools' Day; Arnold temporarily gets Helga blind by an April Fools Prank, but after regaining eyesight she still fakes it so Arnold will spend more time with her who feels he owes her, as well as take her to the April Fools Prom;
# Gerald's Game / Fishing Trip

# Timberly Loves Arnold / Eugene, Eugene!: Timberly develops a crush on Arnold, much to his embarrassment; the children of P.S. 18 participate in a musical with Eugene as the head star.

# Downtown as Fruits / Eugene's Bike: Arnold and his BlackBestFriend, Gerald, ditch the school play (directed by Helga Pataki, a female bully who's secretly in love with Arnold) and go to the bad side of the city in their fruit costumes, where the duo are given a sackful of money by a seedy man who thinks they're criminals waiting for their cut; Arnold cheers up a nerd with a nasty streak of bad luck after his bike gets wrecked in a freak accident.

# Arnold's Hat / Stoop Kid: Arnold loses his baseball cap; Arnold helps an abandoned teenager (voiced by Danny Cooksey[[note]]whom most 1990s Nickelodeon viewers remember as Bobby Budnick on ''SaluteYourShorts''[[/note]]) venture away from the stoop he calls home.

# 6th Grade Girls / The Baseball: Arnold and Gerald become the dates to two sixth grade girls who want to make their boyfriends jealous;

# Operation Ruthless / The Vacant Lot: In "Operation Ruthless," Arnold tries to get close to a sixth grade girl named Ruth [=MacDougal=] at a carnival, and Helga tries to break up Arnold and Ruth.
# The List / Haunted Train: Arnold has a list of things to do to have a perfect Saturday, but everything goes wrong;

# Door #16 / Arnold as Cupid: Arnold is entrusted with a package for a mysterious boarder;

# Tutoring Torvald / Gerald Comes Over: Arnold tutors an underachieving teenager who's been held back in the fourth grade;

# Abner Come Home / The Sewer King: Abner, Arnold's pet pig runs away;

# Save the Tree / New Teacher: Arnold and his friends attempt to save "Mighty Pete", the oldest living tree in their neighborhood; Arnold's 4th grade class gets a [[ExactlyWhatItSaysOnTheTin new teacher]] after Miss Slovak resigns.
# Helga's Love Potion / Gerald's Secret: Helga buys a potion that makes her fall out of love with Arnold;

# Longest Monday / Eugene's Pet
# Monkey Business / Big Caesar

# Arnold Saves Sid / Hookey
# Freeze Frame / Phoebe Cheats: Arnold and Gerald think they've found a conspiracy to do with a planned crime; Phoebe copies a poem out of a book to win the poetry contest, but her conscience is haunted in the form of her prize - a statue.

# The High Life / Best Friends: Gerald gets rich quick selling cheap watches;
# Arnold's Halloween

# Coach Wittenberg / Four-Eyed Jack

# Runaway Float / Partners

# Stinky Goes Hollywood / Olga Gets Engaged: Stinky is chosen as the new spokesman for Yahoo Soda, and discovers that the executives only like Stinky because he's a stupid hick; Olga comes home with a new fiance and news that she's going to drop out of school and get married...and when Helga learns that Olga's fiance is a fraud who's using her, she must choose whether to let Olga ruin her life or save her.

# The Aptitude Test / Oskar Gets a Job: Helga's and Harold's aptitude test results get switched; Oskar, a freeloading, Eastern European boarder, gets a job as a paper delivery man.

# Arnold's Valentine: Arnold sets up a date with his crush, Ruth [=MacDougal=] on the same night he's supposed to meet his French pen pal, Cecile. Meanwhile, Helga poses as Arnold's French pen pal so she can once again steal Arnold away from Ruth.

# Arnold's Room / Helga vs. Big Patty: Sid pretends to Lorenzo that Arnold's room is his room; After Helga gets caught making mean jokes about Patty, she is threatened.

# Curly Snaps / Preteen Scream: The ball monitor job at recess was mistakenly given to Sid, so Curly steals all of the school's kickballs and takes over Principal Wartz's office; Phoebe wins a radio contest where the winner meets pop-singing sensation Ronnie Matthews (voiced by Bronson Pinchot[[note]]the actor who played Balki on the 1980s sitcom ''PerfectStrangers''[[/note]] -- and, during a diner meal, learns the secret behind Ronnie's fame.

# The Beeper Queen / Oskar Can't Read

# Arnold's Hat / Stoop Kid: Arnold loses his baseball cap; Arnold helps an abandoned teenager (voiced by Danny Cooksey) venture away from the stoop he calls home.

# 6th Grade Girls / The Baseball

# Mugged / Roughin' It: Arnold takes karate lessons after a petty thug robs him on the bus;
# Door #16 / Arnold as Cupid

# Das Subway / Wheezin' Ed: Arnold, Gerald, Phoebe, Harold, and Helga get stuck on a subway car with an old blind man with a dog, a claustrophobic and her therapist, and a homeless man who thinks the subway car is his house; the kids venture into a cave said to be haunted by a wheezing gangster.

# Abner Come Home / The Sewer King

# Ransom / Ms. Perfect: Timberly's stuffed toy goes missing, so Arnold and Gerald play detective to find out who stole it; Lila is the new girl and the other girls hate her upstaging them, but they still feel guilty after playing tricks on her.

# Stinky Goes Hollywood / Olga Gets Engaged: Stinky is chosen as the new spokesman for Yahoo Soda, and discovers that the executives only like Stinky because he's a stupid hick; Helga discovers that Olga's new fiance is using her.
# Curly Snaps / Preteen Scream: The ball monitor job at recess was mistakenly given to Sid, so Curly steals all of the school's kickballs and takes over Principal Wartz's office; Phoebe meets a famous star singer named Ronnie Matthews.

# Arnold Betrays Iggy / Helga and the Nanny: Arnold accidently tells his classmates Iggy's secret, so now he tries everything in his might to get Iggy's forgiveness; Helga gets a new Nanny, which she wants to get rid of.

# Helga's Show / The Flood: Helga is shunned by several students after her impressions of them offend them; The fourth-graders are trapped in school during a flash flood.

# Crabby Author / Rich Kid: Arnold meets his favorite children's book author, who turns out to be a bitter, old woman who lost her childlike whimsy years ago and lives alone;

# Grandpa's Sister / Synchronized Swimming
# Helga Sleepwalks / Fighting Families

# Veterans' Day
# Helga on the Couch: Helga is sent to the school therapist, where she tells the tragic story of her childhood and how she first fell in love with Arnold.

# Monkeyman! / Buses, Bikes and Subways

# Stuck in a Tree / Rhonda Goes Broke: Arnold, Eugene and Harold gets stuck in a tree and fear they will be there forever; Rhonda goes broke and has to deal with living at the boarding house where Arnold lives.

# Grandpa's Packard / Phoebe's Little Problem

# The List / Haunted Train: Everything on Arnold's list for a perfect Saturday goes wrong in some way;

# Benchwarmer / Cool Jerk
# Das Subway / Wheezin' Ed: Arnold, Gerald, Phoebe, Harold, and Helga get stuck on a subway car with an old blind man, a claustrophobic and her therapist, and a bum; the kids venture into a cave said to be haunted by a wheezing gangster.

# False Alarm / World Records: Eugene is accused of pulling the school fire alarm; Arnold rallies the town into helping him break a world record.

# Arnold's Valentine: Arnold sets up a date with his crush, Ruth [=MacDougal=] on the same night he's supposed to meet his French pen pal. Meanwhile, Helga poses as Arnold's French pen pal so she can once again steal Arnold away from Ruth.

# Helga's Love Potion / Gerald's Secret
# The Big Scoop / Harold's Kitty

# New Bully on the Block / Phoebe Breaks a Leg: Arnold and his classmates deal with fifth-grader bullies who steals their vacant lot; Phoebe breaks her leg because of Helga, and keeps on faking it after getting cured so Helga can keep on doing favors for her (who feels guilty for what happened).

# Stuck in a Tree / Rhonda Goes Broke

# The Journal

# New Bully on the Block / Phoebe Breaks a Leg

# Back to School / Egg Story: Arnold's grandpa goes back to school to get the elementary school diploma he never got; Arnold and Helga are stuck with a team work assignment.

# Timberly Loves Arnold / Eugene, Eugene!

# Helga's Parrot / Chocolate Turtles: Big Bob's parrot overhears Helga romantically gush about Arnold in her sleep, ang repeats it, to Helga's chagrin; Gerald's sister Timberly eats all the Chocolate Turtles he and Arnold were going to sell, so now they must make new ones.

# Weird Cousin / Baby Oskar: Arnold's cousin Arnie visits him, who everybody finds creepy;

# Headless Cabbie / Friday the 13th

# Suspended / Ernie in Love: Harold gets himself suspended by own free will, but realizing how boring it is, he tries to get back in to school;

# Helga's Parrot / Chocolate Turtles: Big Bob's parrot overhears Helga romantically gush about Arnold in her sleep, ang repeats it, to Helga's chagrin;
# Love and Cheese / Weighing Harold: Arnold asks Lila out to the Cheese Festival while Helga tries to sabotage it;

# Helga's Parrot / Chocolate Turtles: Big Bob's parrot overhears Helga romantically gush about Arnold in her sleep, adn repeats it, to Helga's chagrin;

# Helga's Locket / Sid and Germs: Helga loses her locket with Arnold in it and it winds up in Arnold's possession, which Helga try to get back; After seeing a documentary about the danger of germs in school, Sid becomes ridiculously germophobic.

# Arnold Betrays Iggy / Helga and the Nanny

# Girl Trouble / School Dance

# Helga's Parrot / Chocolate Turtles
# Love and Cheese / Weighing Harold
# Back to School / Egg Story

# Weird Cousin / Baby Oskar

# Bag of Money / Principal Simmons: Arnold, Gerald and Sid find a bag of money in a garbage can. Deciding that they will return it to the police, Arnold holds onto it for the time being. He loses it by a mix-up and soon Sid believes that he used up all the money that causes everyone's reliance on Arnold to falter;

# Arnold Visits Arnie / Chocolate Boy: Arnold visits Arnie only to discover anthesis counterparts of his classmates, including Lila (Lulu) and Helga (Hilda).

# April Fools' Day; Arnold temporarily gets Helga blind by an April Fools Prank, but after regaining eyesight she still fakes it so Arnold will spend more time with her as he feel he owes her, as well as take her to the April Fools Prom.

# Married: By a marriage prediction by Rhonda, Arnold and Helga find out they will get married in the future. Having very mixed reactions to it, they wind up having a nightmare and a wonderful dream about it, respectively.

# Bag of Money / Principal Simmons: Arnold, Gerald and Sid find a bag of money in a garbage can. Deciding that they will return it to the police, Arnold holds onto it for the time being. He loses it by a mix-up and soon Sid believes that he used up all the money that causes everyone's reliance on him to falter;

# Helga's Locket / Sid and Germs
# Suspended / Ernie in Love
# Parents' Day

# Beaned / Old Iron Man
# Arnold Visits Arnie / Chocolate Boy
# Harold vs. Patty / Rich Guy
# April Fools' Day

# Married

# Ghost Bride / Gerald vs. Jamie O.

# Helga's Masquerade / Mr. Green Runs
# Sid the Vampire Slayer / Big Sis
# Bag of Money / Principal Simmons

# Helga's Boyfriend / Crush on Teacher

# Ransom / Ms. Perfect

# Freeze Frame / Phoebe Cheats

# Arnold's Room / Helga vs. Big Patty

# Sid's Revenge / Roller Coaster

# Helga's Show / The Flood

# School Play

# It Girl / Deconstructing Arnold
# Grudge Match / Polishing Rhonda

# The Racing Mule / Curly's Girl

# Spelling Bee / Pigeon Man: Arnold competes in a spelling bee to win money for a keyboard while Helga is forced to compete in a spelling bee by her father, who wants her to be like her older sister, Olga; Arnold meets a homeless man who lives on the roof of his boarding house and cares for the pigeons.

# Olga Comes Home / Sally's Comet: Olga, Helga's perky, perfect, college-aged sister, comes home for college break and Helga turns her into an emotional wreck by [[TheBGrade planting a "B+" in her straight-A report card]]; Arnold and Gerald try to make everyone turn off their lights so they can see Sally's Comet.

# Save the Tree / New Teacher

# Mudbowl / Gerald Moves Out

# Eugene Goes Bad / What's Opera, Arnold?: Eugene becomes a bad kid after learning his favorite action star is a wimp; Arnold's love life is reimagined as the Bizet opera, ''Carmen''.

# Curly Snaps / Preteen Scream

# Helga's Makeover / The Old Building: ; Arnold is torn between helping Ernie destroy an old theater and helping his grandma save it.

# Helga's Makeover / The Old Building ; Arnold is torn between helping Ernie destroy an old theater and helping his grandma save it.

# Arnold's Christmas: It's Christmas in the city. While Helga goes searching for the perfect Christmas gift for her crush, Arnold helps his neighbor, Mr., Hyunh find the daughter he gave to a helicopter pilot during the Fall of Saigon.

# Olga Comes Home / Sally's Comet: Olga, Helga's perky, perfect, college-aged sister, comes home for college break and Helga turns her into an emotional wreck by [[TheBGrade planting a "B+" in her straight-A report card]];

# Helga's Makeover / The Old Building

# The List / Haunted Train

# Spelling Bee / Pigeon Man: Arnold competes in a spelling bee to win money for a keyboard while Helga is forced to compete in a spelling bee by her father, who wants her to be like her older sister, Olga; Arnold meets a homeless man who lives on the roof of his boarding house and cares for the pigeon.

# The High Life / Best Friends

# Steely Phil / Quantity Time

# Crabby Author / Rich Kid

# Dino Checks Out: FrankSinatra-esque crooner Dino Spumoni fakes his death so his albums can sell better.

# Downtown as Fruits / Eugene's Bike
# The Little Pink Book / Field Trip
# Arnold's Hat / Stoop Kid

# Heat / Snow
# Operation Ruthless / The Vacant Lot

# Mugged / Roughin' It

# Das Subway / Wheezin' Ed
# Tutoring Torvald / Gerald Comes Over
# Spelling Bee / Pigeon Man
# Arnold's Christmas
# Olga Comes Home / Sally's Comet

# False Alarm / World Records
# Magic Show / 24 Hours to Live
# Arnold's Valentine

# Eating Contest / Rhonda's Glasses

# Hall Monitor / Harold's Bar Mitzvah

# Eugene Goes Bad / What's Opera, Arnold?
# Tour de Pond / Teacher's Strike

# Helga Blabs It All / Harold the Butcher
# Dangerous Lumber / Mr. Hyunh Goes Country
# Casa Paradiso / Gerald's Tonsils

# Stinky Goes Hollywood / Olga Gets Engaged

# Grandpa's Birthday / Road Trip

# The Aptitude Test / Oskar Gets a Job

# Helga on the Couch
# Dino Checks Out