A. Helga and Arnold locked in a greenhouse together for 24 hours? Now THERE'S a science fair project! They should both get a great grade on it - if they don't kill each other first.
B. When the legendary musical duo of Dino and Don Spumoni split up, they each move into the boarding house (unknown to each other). So it's up to Arnold and Gerald to restore harmony...
click here to see where to watch or .
Ready to Watch Hey Arnold, Season 3, Episode 17?