I agree completely, not to mention, this episode has some really classic lines:

TV ANNOUNCER: Sweet and fishy, good for kids, golden delicious, Honey Squids!
ARTHUR and D.W.: BLEH!

D.W.: What did you draw?
ARTHUR: A dog, and he's bored. What did you draw?
D.W.: A stick.
ARTHUR: A stick?!
D.W.: A stick from the park WHERE YOU PROMISED TO TAKE ME TODAY!!!

ARTHUR: Oh great, now I can write a really exciting report about grandmother - I visited my grandma, she's nice, the end... I'm doomed.

THORA: You know what they say, this is only good weather for ducks.
*A family of ducks bike down the sidewalk*
FATHER DUCK: Beautiful weather, huh?
D.W.: Huh?

The Honey Squid commercial is probably my favorite scene from any Arthur episode. It's so disgusting, yet I feel like I want to try a bowl of it.

Brain's monologue at the beginning also cracks me up:
"Rain rain, go away... evaporate and recondense combining with molecules in Cumulonimbus clouds to return in a low pressure weather front on a more appropriate occasion, hey hey!"