Hey Arnold!/Awesome

"Arnold: You see, this is how the lot looked before we cleaned it up. Before we turned it into Gerald Field - and before you guys kicked us out.
 * Arnold's explanation to Grandpa and the other adults in "The Vacant Lot" for why he and his friends just overturned a dumpster full of garbage into the aforementioned vacant lot:

Gerald: So if you want Gerald Field so badly, you can have it just the way we found it: a dump."


 * Arnold finally getting back at Helga in "Girl Trouble",showing that there is a difference between Nice Guy and Extreme Doormat.
 * Stoop Kid finally leaving his stoop, jumping off the stoop when Harold makes fun of him for being afraid to leave his stoop and chasing him while saying "COME HERE FAT BOY! I'M GONNA ROLL YOU DOWNTOWN!" Also a funny moment. Harold's Oh Crap expression just sells the awesomeness.