March 10, 1999 • 24m
Harold, Sid, and Stinky all moon Principal Wartz, but Arnold is blamed, even though he was just an innocent bystander.
March 10, 1999 • 24m
Helga's sister Olga comes home for spring break and becomes a classroom aid in Helga's class, much to Helga's chagrin.
March 15, 1999 • 24m
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...Read more
March 15, 1999 • 24m
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...Read more
March 17, 1999 • 24m
After losing Eugene's birthday party invitations, Arnold feels obliged to throw him another party, but it doesn't work out.
March 17, 1999 • 24m
Stinky grows a huge pumpkin to enter in a city competition.
March 29, 1999 • 24m
After Bob pops his spine, Miriam runs Big Bob's Beepers. She gets in over her head and forgets about her family.
March 29, 1999 • 24m
Arnold finds out that Oskar is illiterate and tries to teach him to read.
March 31, 1999 • 24m
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 coup...Read more
March 31, 1999 • 24m
Phoebe is promoted to the sixth grade, but realizes that her new so-called "friends" are just using her to do their homework.
April 5, 1999 • 24m
A sleep-talking Helga confides into Bob's parrot about her love for Arnold. The next day, the parrot flies into Arnold's window, a...Read more
April 5, 1999 • 24m
Crisis strikes when Gerald's little sister, Timberly, eats a stock of chocolate turtles that he and Arnold are supposed to sell fo...Read more
April 7, 1999 • 24m
Helga tries to separate Arnold from Lila while at the annual Cheese Fair.
April 7, 1999 • 24m
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.
September 11, 1999 • 24m
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.
September 11, 1999 • 24m
Arnold and Helga must care for an egg for a school project about parenting. Meanwhile, Rhonda and Harold are project partners and ...Read more
September 18, 1999 • 24m
Helga becomes a model, but she quits after she gets irritated at everyone dressing like her.
September 18, 1999 • 11m
Arnold's classmates are tired of constantly telling them the right thing to do, so he stops giving them advice. Nevertheless, when...Read more
September 25, 1999 • 11m
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.
September 25, 1999 • 11m
Rhonda attends a finishing school, but is far from impressive with her stroppy attitude, and seeks help from fellow student Big Patty.
October 9, 1999 • 11m
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.
October 9, 1999 • 11m
Oskar has to take care of his infant cousin-in-law (also named Oskar), while both Susie and her cousin are gone.
October 16, 1999 • 11m
Phil's twin sister comes for a visit, bringing along an unsettled conflict between them.
October 16, 1999 • 11m
Arnold and the gang are part of a synchronized swimming team led by Coach Wittenburg.
October 23, 1999 • 11m
After eating pork rinds, Helga sleepwalks, uttering her secret about Arnold as she does so.
October 23, 1999 • 11m
Arnold, Grandpa, Grandma, Ernie, and Mr. Hyunh compete on a game show against a "perfect" family from PS 119
October 30, 1999 • 11m
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.
October 30, 1999 • 11m
Arnold and Gerald try to prove superstitions are fictitious, only for it all to backfire on them.
November 6, 1999 • 11m
Arnold's Grandpa recalls his adventures as a soldier in the Second World War, outwitting a regiment of Nazis, while Gerald's dad, ...Read more
December 4, 1999 • 11m
Helga confides in the school psychiatrist about her social life, family life, and her love for Arnold.
December 11, 1999 • 11m
Dino Spumoni is found missing and then declared dead after what appears to be a suicide attempt. but Arnold finds out that this is...Read more