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23 Episodes 1998 - 2004
Episode 1
Sat, Mar 4, 200024 mins
Monkeyman. :When Arnold gives the superhero Monkeyman a taste of normal life, he's far too busy to bother helping the weak and downtrodden. Buses, Bikes, and Subways: Helga and Harold must return to town on their own after the bus leaves them behind after a school trip to a chocolate factory, and Helga has tickets for a wrestling match and she can't be late.
Episode 2
Sat, Mar 11, 200024 mins
When Helga realizes that Arnold is so taken by Lila because of her wit and charm, she decides that the only way to get Arnold to notice her is to be like Lila./Arnold helps Mr. Green run for the City Council.
Episode 2
Wed, Sep 24, 199724 mins
Helga's Love Potion: Helga drinks a potion to lose all feelings for Arnold. Gerald's Secret: Gerald confesses to Arnold that he never learned how to ride a bike, and Arnold has to train him before he competes in the Bike-a-thon. The other kids tease him about it, but Gerald eventually proves them wrong.
Episode 3
Mon, Oct 14, 199624 mins
Helga steals Arnold's hat to complete her secret shrine - a statue in the shape of his head made from Arnold-chewed bubble gum. Arnold feels like he is nothing without his hat, so Helga is planning to return it to him - until her mother throws it in the trash, which is on its way to the dump.
Episode 3
Sat, Mar 18, 200025 mins
After a chilling vampire movie, Sid is so spooked that he believes that Stinky has all of the characteristics of a vampire. / Olga comes home and wants to be a big sister to a little girl.
Episode 4
Wed, Apr 5, 200025 mins
Bag of Money: Arnold tries to convince people that an old lady with a peg leg, pink hair, and one eyebrow took a bag of money by mistake, exactly $3,937 that he, Sid, and Gerald found in an alley. Principal Simmons: When Principal Wartz leaves after being criticized for being too harsh with the students, Mr. Simmons is elected as principal in his place, only to discover it's not as easy as he thought.
Episode 5
Wed, Apr 12, 200024 mins
When A New Bully Comes On The Block, Wolfgang Feels Threatened That He Will Lose His Power Over Arnold And The Gang. Phoebe Breaks Her Leg When She Rescues Helga From The Pathway Of A Speeding Bus.
Episode 6
Mon, Dec 28, 199824 mins
At the Parent's Day competition, Arnold learns that even though he doesn't have "real" parents, his grandparents are just as good as everyone else's parents.
Episode 7
Wed, Apr 19, 200024 mins
Helga's Locket: Helga loses her locket inscribed with her name, and Arnold's Grandpa finds it. Helga has to get it back before Arnold and his Grandpa open it. Sid and Locket: Sid was the champion frog-catcher of P.S. 118 and was going to be in the Annual Frog-Catching Contest until he becomes obsessively clean after watching a hygiene film.
Episode 8
Wed, Apr 26, 200025 mins
Suspended: Harold hates school and he wants to get suspended by Principal Wartz. Harold finally gets suspended for a week. Harold sees this as an opportunity to have some time off without his parents knowing. When Harold tries to have a fun filled day he discovers that being suspended can be boring. Harold desperately gets Arnold to help him get back to school. Ernie in Love: Ernie falls in love with a beautiful magazine model. Arnold agrees to help Ernie win Lola's heart by arranging a date for them.
Episode 9
Thu, May 25, 200024 mins
By complete coincidence, Arnold and Helga and family end up at the same beach resort for summer vacation.
Episode 10
Fri, Jan 5, 200124 mins
Stuck in a Tree: Arnold, Harold, and Eugene get stuck in a tree and their only hopes of getting down are from Chocolate Boy. Rhonda goes Broke: When Buckley's stocks dry up, Rhonda's family goes broke and is forced to live at the Sunset Arms.
Episode 11
Fri, Jan 12, 200124 mins
Beaned: After Arnold accidentally hits Helga on the head with a baseball, she develops amnesia and he takes care of her. Wanting to continue getting Arnold's attention, Helga pretends to have amnesia after she recovers. Old Iron Man: Grandpa and Jimmy Kafka, his rival since their school days, compete in the Old Iron Man triathlon to prove who's the best.
Episode 12
Fri, Jan 26, 200124 mins
Arnold Visits Arnie: Arnold visits his cousin, Arnie, whose friends look remarkably familiar to Arnold's. Chocolate Boy: After Wolfgang makes a bet with Chocolate Boy to go 2 weeks without chocolate, he asks for Arnold's help to find an end to his addiction.

Episode 13
Sun, Feb 3, 200224 mins
Harold vs. Patty: After losing an arm wrestling match against a girl, Harold becomes a laughingstock at school and tries his best to regain his stride. Rich Guy: When Arnold stops a hockey puck from hitting a rich man, the man treats Arnold as "the son he's always wanted". Arnold is fine with this until he discovers the man actually does have a son of his own, and tries to help the two have a better relationship.
Episode 14
Mon, Apr 1, 200224 mins
It's April Fools and Helga has targeted Arnold as her practical joke victim for the day. When Helga goes one prank too far, Arnold stages a retaliation and brings in Grandpa's prized practical joke.

Episode 15
Sat, Apr 27, 200224 mins
Gerald's Game: Gerald becomes obsessed with the latest fantasy card game. When Arnold tries to get Gerald to quit the game, he refuses. Now, Arnold must figure out a way to help break Gerald free of his obsession. Arnold challenges Gerald to a fantasy card game in hopes of breaking him free of his obsession. Fishing Trip: Arnold, Gerald, Sid, Harold, and Eugene go on a fishing trip with their dads and grandpa. During the fishing trip, the guys encounter various obstacles such as bears eating their food and ransacking their camp, not being able to catch fish, eating beans, getting lost, and putting up with various animals along the way.
Episode 16
Sat, May 11, 200224 mins
Rhonda uses her origami marriage predictor to tell who will marry who within the gang. Everyone becomes curious. Except Arnold who refuses to take the test, until Rhonda piques his curiosity by telling him that it might predict that he will marry Lila.

Episode 17
Sat, Jun 1, 200224 mins
On the Lam: Stinky, Harold and Sid are on the run after they think they blew up the police station. Family Man: The new owner of the restaurant where Mr. Hyunh works wants to make it a "family restaurant", and wants his new head chef to be a family man, so Mr. Hyunh pretends he has one with Suzie as his wife, Arnold as his son, and Grandpa as his father.
Episode 18
Mon, Oct 14, 200224 mins
The Racing Mule: Mr. Hyunh, Ernie, and Oskar buy a race horse named Glueboy so they can enter it in a race. Phil points out the horse they purchased is actually a mule. When Mr. Hyunh, Ernie, and Oskar try to ride the mule, they fail miserably. When they see Arnold feeding and petting Glueboy, they decide to let Arnold compete in the mule race. A day before the race, Glueboy gets sick after Oskar feeds him protein shakes. Arnold stays with Glueboy and he nurses him back to health. Glueboy is finally able to race, both Arnold and Glueboy beat their competitor. Curly's Girl: Rhonda is tempted by an expensive fur coat that her father has purchased for her mother's birthday. Rhonda secretly wears the fur coat to the school's art show, it is accidentally stained with a candy apple when Park bumps into her. Desperate not to get in trouble by her parents, Rhonda reluctantly agrees to let Curly clean the fur coat, on the condition Rhonda goes out with Curly for a week and if Rhonda doesn't comply to Curly's deal, he will show the incriminating evidence to her parents.
Episode 19
Mon, Nov 11, 200246 mins
On the anniversary of his parent's disappearance, Arnold decides to give up hoping that they will ever return home. But while packing away their keepsakes in the attic, Arnold finds his father's old journal.

Episode 20
Tue, Jan 28, 200325 mins
When Gerald tries to get rid of his little sister Timberly, Arnold sticks up for her by persuading Gerald to let her hang out with them. /Mr. Leichliter, the theater critic, posts auditions for his rendition of the classic play, "Eugene, Eugene".
Episode 21
Tue, Nov 11, 200324 mins
HEY ARNOLD! presents a fresh look at life in a big city as seen from a kid's point of view. Arnold has a creative mind, an admirable nonchalance and a head shaped like a football. Along with his best friend Gerald, Arnold must
Episode 22
Sat, Nov 15, 200324 mins
Mr. Simmons wins The Teacher of the Year award and The Knowledge Channel wants to do a documentary capturing the spontaneous moments in his class./Big Bob has a change of heart when he has what appears to be a heart attack.
Episode 23
Tue, Jun 8, 200424 mins
Grandpa enters his packard in the classic car competition. It is admired by all until someone admires it enough to steal it./Phoebe is set to receive an award for her perfect attendance.