"The Wrath Of Dark Kat" also has a few, including another instance of the immortal "Hey, what took ya so long?" line. Also this exchange, when Razor is about to make the Heroic Sacrifice by deactivating the nuke while it is falling to the ground.
T-Bone: "Any last wishes, buddy... just in case?"
Razor and the nuke fall through the clouds, disappearing from sight. Then we hear his voice over the commlink:
Razor: "Get Dark Kat."
And T-Bone does.
Some of the scenes Chance and Jake have when they're just hanging out as civilians can be really sweet and really show how good of friends they are, like at the beginning of "The Ci-Kat-A" when Jake and Chance go to see a movie together and see (What Chance thinks) is a shooting star as they get ready to head home. Or the beginning of "Mutation City" which revolves around Jake saving Chance from drowning and is genuinely concerned about Chance's not knowing how to swim.