Season
Season 5 Episode
- Season 2 Save the Tree
- Season 2 New Teacher
- Season 2 Helga's Love Potion
- Season 2 Gerald's Secret
- Season 2 The Big Scoop
- Season 2 Harold's Kitty
- Season 2 Longest Monday
- Season 2 Eugene's Pet
- Season 2 Monkey Business
- Season 2 Big Caesar
- Season 2 Ransom
- Season 2 Ms. Perfect
- Season 2 Arnold's Halloween
- Season 2 Arnold Saves Sid
- Season 2 Hookey
- Season 2 Freeze Frame
- Season 2 Phoebe Cheats
- Season 2 Mud Bowl
- Season 2 Gerald Moves Out
- Season 2 The High Life
- Season 2 Best Friends
- Season 2 Steely Phil
- Season 2 Quantity Time
- Season 2 Eating Contest
- Season 2 Rhonda's Glasses
- Season 2 Helga's Boyfriend
- Season 2 Crush on Teacher
- Season 2 Hall Monitor
- Season 2 Harold's Bar Mitzvah
- Season 2 Coach Wittenberg
- Season 2 Four-Eyed Jack
- Season 2 Eugene Goes Bad
- Season 2 What's Opera, Arnold?
- Season 2 Tour de Pond
- Season 2 Teachers' Strike
- Season 2 Runaway Float
- Season 2 Partners
Hey Arnold! - Season 2 Episode 9 Monkey Business
8.02 12 minutes An organ grinder's monkey kisses Helga, who's convinced she has caught 'monkeynucleosis'.
