Hey Arnold! - Season 4 - Episodes (31)

Episode 1 - Full Moon

Mar 10, 1999

Harold, Sid, and Stinky all moon Principal Wartz, but Arnold is blamed, even though he was just an innocent bystander.

Episode 2 - Student Teacher

Mar 10, 1999

Helga's sister Olga comes home for spring break and becomes a classroom aid in Helga's class, much to Helga's chagrin.

Episode 3 - Big Gino

Mar 15, 1999

After Sid works off a debt with loan shark Big Gino, the two become friends, but when Sid is told to give Arnold a swirlie, he has to choose between the two.

Episode 4 - Jamie O in Love

Mar 15, 1999

Gerald's older brother Jamie O has a sudden burst of kindness when he finds a girlfriend, but Arnold and Gerald soon find out that the girl is just using Jamie O.

Episode 5 - Eugene's Birthday

Mar 17, 1999

After losing Eugene's birthday party invitations, Arnold feels obliged to throw him another party, but it doesn't work out.

Episode 6 - Stinky's Pumpkin

Mar 17, 1999

Stinky grows a huge pumpkin to enter in a city competition.

Episode 7 - The Beeper Queen

Mar 29, 1999

After Bob pops his spine, Miriam runs Big Bob's Beepers. She gets in over her head and forgets about her family.

Episode 8 - Oskar Can't Read?

Mar 29, 1999

Arnold finds out that Oskar is illiterate and tries to teach him to read.

Episode 9 - Dinner for Four

Mar 31, 1999

Helga wants to show Arnold that she can be as sophisticated as Lila is by taking him, Gerald, and Phoebe out to dinner with a coupon she won. She devises a plan to get out of paying when she discovers they're at the wrong restaurant.

Episode 10 - Phoebe Skips

Mar 31, 1999

Phoebe is promoted to the sixth grade, but realizes that her new so-called "friends" are just using her to do their homework.

Episode 11 - Helga's Parrot

Apr 5, 1999

A sleep-talking Helga confides into Bob's parrot about her love for Arnold. The next day, the parrot flies into Arnold's window, and it is up to Helga to get it.

Episode 12 - Chocolate Turtles

Apr 5, 1999

Crisis strikes when Gerald's little sister, Timberly, eats a stock of chocolate turtles that he and Arnold are supposed to sell for a local scout organization.

Episode 13 - Love and Cheese

Apr 7, 1999

Helga tries to separate Arnold from Lila while at the annual Cheese Fair.

Episode 14 - Weighing Harold

Apr 7, 1999

Harold, after discovering his friends think he is obese, decides to go on a weight-loss cruise. When he comes back, though, he is noticeably larger.

Episode 15 - Back to School

Sep 11, 1999

After Grandpa tells Arnold that he never got his grade school diploma, Arnold convinces him to come to go back to school at P.S. 118.

Episode 16 - Egg Story

Sep 11, 1999

Arnold and Helga must care for an egg for a school project about parenting. Meanwhile, Rhonda and Harold are project partners and must also take care of an egg.

Episode 17 - It Girl

Sep 18, 1999

Helga becomes a model, but she quits after she gets irritated at everyone dressing like her.

Episode 18 - Deconstructing Arnold

Sep 18, 1999

Arnold's classmates are tired of constantly telling them the right thing to do, so he stops giving them advice. Nevertheless, when his classmates get into sticky situations, they are in desperate need of his advice.

Episode 19 - Grudge Match

Sep 25, 1999

After getting in a car accident, Bob and Grandpa face off on the golf green, with the loser having to pay for the damage to both cars.

Episode 20 - Polishing Rhonda

Sep 25, 1999

Rhonda attends a finishing school, but is far from impressive with her stroppy attitude, and seeks help from fellow student Big Patty.

Episode 21 - Weird Cousin

Oct 9, 1999

Arnold's bland country cousin, Arnie, comes to visit. Arnold begins to notice that Arnie and Lila show interest in each other, making him jealous.

Episode 22 - Baby Oskar

Oct 9, 1999

Oskar has to take care of his infant cousin-in-law (also named Oskar), while both Susie and her cousin are gone.

Episode 23 - Grandpa's Sister

Oct 16, 1999

Phil's twin sister comes for a visit, bringing along an unsettled conflict between them.

Episode 24 - Synchronized Swimming

Oct 16, 1999

Arnold and the gang are part of a synchronized swimming team led by Coach Wittenburg.

Episode 25 - Helga Sleepwalks

Oct 23, 1999

After eating pork rinds, Helga sleepwalks, uttering her secret about Arnold as she does so.

Episode 26 - Fighting Families

Oct 23, 1999

Arnold, Grandpa, Grandma, Ernie, and Mr. Hyunh compete on a game show against a "perfect" family from PS 119

Episode 27 - Headless Cabbie

Oct 30, 1999

Arnold tells an urban legend about a decapitated taxi driver. The gang goes out, only to find the details in the story are becoming real.

Episode 28 - Friday the 13th

Oct 30, 1999

Arnold and Gerald try to prove superstitions are fictitious, only for it all to backfire on them.

Episode 29 - Veterans Day

Nov 6, 1999

Arnold's Grandpa recalls his adventures as a soldier in the Second World War, outwitting a regiment of Nazis, while Gerald's dad, Martin, remembers his own time serving in Vietnam.

Episode 30 - Helga on the Couch

Dec 4, 1999

Helga confides in the school psychiatrist about her social life, family life, and her love for Arnold.

Episode 31 - Dino Checks Out

Dec 11, 1999

Dino Spumoni is found missing and then declared dead after what appears to be a suicide attempt. but Arnold finds out that this isn't the case, and he secretly lives in the boarding house, believing that his work will skyrocket in value after his "death".