Eugene's Birthday: When Eugene's birthday parties are a bust, he begins to think that Arnold is a jinx, and Arnold tries to prove him wrong by throwing a perfect birthday ...

Full Moon: Harold, Sid and Stinky moon Principal Wartz, but Arnold is blamed, even though he was just an innocent bystander. Student Teacher: Helga's sister Olga comes ho ...

Full Moon: Harold, Sid and Stinky moon Principal Wartz, but Arnold is blamed, even though he was just an innocent bystander. Student Teacher: Helga's sister Olga comes ho ...

Full Moon: Harold, Sid and Stinky moon Principal Wartz, but Arnold is blamed, even though he was just an innocent bystander. Student Teacher: Helga's sister Olga comes ho ...

Full Moon: Harold, Sid and Stinky moon Principal Wartz, but Arnold is blamed, even though he was just an innocent bystander. Student Teacher: Helga's sister Olga comes ho ...

Full Moon: Harold, Sid and Stinky moon Principal Wartz, but Arnold is blamed, even though he was just an innocent bystander. Student Teacher: Helga's sister Olga comes ho ...

A reluctant Arnold, after Mr. Simmons begged him, gets the part of Romeo in the school play. But getting the part of Juliet is the talented Rhonda, with several girls as ...

A reluctant Arnold, after Mr. Simmons begged him, gets the part of Romeo in the school play. But getting the part of Juliet is the talented Rhonda, with several girls as ...

A reluctant Arnold, after Mr. Simmons begged him, gets the part of Romeo in the school play. But getting the part of Juliet is the talented Rhonda, with several girls as ...

A reluctant Arnold, after Mr. Simmons begged him, gets the part of Romeo in the school play. But getting the part of Juliet is the talented Rhonda, with several girls as ...

A reluctant Arnold, after Mr. Simmons begged him, gets the part of Romeo in the school play. But getting the part of Juliet is the talented Rhonda, with several girls as ...

Arnold tells Grandpa he's tired of dealing with Helga's nonsense. Grandpa tells Arnold a story about a girl he had to deal with when he was a kid. / Arnold is in charge o ...

Arnold tells Grandpa he's tired of dealing with Helga's nonsense. Grandpa tells Arnold a story about a girl he had to deal with when he was a kid. / Arnold is in charge o ...

Arnold tells Grandpa he's tired of dealing with Helga's nonsense. Grandpa tells Arnold a story about a girl he had to deal with when he was a kid. / Arnold is in charge o ...

Arnold tells Grandpa he's tired of dealing with Helga's nonsense. Grandpa tells Arnold a story about a girl he had to deal with when he was a kid. / Arnold is in charge o ...

Arnold tells Grandpa he's tired of dealing with Helga's nonsense. Grandpa tells Arnold a story about a girl he had to deal with when he was a kid. / Arnold is in charge o ...

Phoebe agrees to take a dive so that Helga can win a competition, but she comes to regret her decision. / The boys engage in a recreation of a historical battle, only thi ...

Phoebe agrees to take a dive so that Helga can win a competition, but she comes to regret her decision. / The boys engage in a recreation of a historical battle, only thi ...

Phoebe agrees to take a dive so that Helga can win a competition, but she comes to regret her decision. / The boys engage in a recreation of a historical battle, only thi ...

Phoebe agrees to take a dive so that Helga can win a competition, but she comes to regret her decision. / The boys engage in a recreation of a historical battle, only thi ...

Phoebe agrees to take a dive so that Helga can win a competition, but she comes to regret her decision. / The boys engage in a recreation of a historical battle, only thi ...

Arnold Betrays Iggy: When Arnold sees Iggy wearing bunny pajamas, he promises he won't tell anybody - but when Sid and Stinky guess, Iggy refuses to forgive Arnold. Helga ...

The Aptitude Test: Helga thinks she's dim because she failed an aptitude test at school, only to discover she received Harold's test score, and vice versa. Oskar Gets a J ...

Grandpa thinks he's going to die soon because no one in his family ever made it past his age. He prepares to die, and Arnold tries to convince him that life is still wort ...

Stinky's simple life changes after he becomes the surprise new spokesman for Ya-Hoo Soda. / Olga brings home her surprise fiancee who wins over everyone except Helga. ...

Arnold lends Sid his room for one evening, but the arrangement backfires when Sid keeps on borrowing the room. / Helga and Patty (the big girl) face off. ...

Eugene Goes Bad: Eugene finds out that his TV hero, The Abdicator, is just an overpaid, whiny Hollywood star who doesn't do his own stunts, and without a role model, Euge ...

Arnold trains Grandpa to take on his old Chinese checkers nemesis, Robby Fisher.Miriam decides to visit her mother after learning that Big Bob and Helga are on vacation a ...

Monkey Business: Helga believes she has contacted a deadly disease after learning about it in class. Big Caesar: Arnold and Gerald try to catch Big Caesar, a prehistoric ...

Save the Tree: Arnold and the gang must stop Big Bob from chopping down the oldest tree in town. New Teacher: After the kids scare away their new, sensitive teacher, they ...

Magic Show: During Arnold's magic show, he makes Helga disappear by putting her in a box, but Helga sneaks out. After running into a post and knocking herself out, she ha ...

Arnold's pet pig, Abner, escapes one night while Arnold is sleeping. When Arnold tries to bring Grandpa's pocket watch home from the repair shop, he accidentally drops it ...