Theres wayyy too many...but I'd have to say my current favorite is this one
"Phone call for all, alchoholic, um, jock strap, is eye P. Freely here, hey is there a butts here, a seemore butts, a homer sexual, Mike Rotch, uh amanda hug and kiss a huge ass, Ivanna Tinkle, I'm a stupid moron with an ugly face and a big butt and my butt smells, and...I like to kiss my own butt."
I also like the scene where Bart allegedly loses his mind over cable TV during his test.
Comments on your favorite quote or episode?
The Homer vs. New York one was funny but the government isn't allowing it to be played because of the towers, which I think is total bulls*** because of the great scene in it.
"Mountain Dew, or Crab Juice?"
"EWW, I'll take the Crab Juice!"