Colony 6 quests seem to have some hilarious dialogue, if you ask me.
Dunban's unique comment from the quest Cook-Off Counterattack!
"I had the... pleasure... of sampling one of your dishes. I must say, I truly believed a part of my soul died."
Riki's unique comment from the quest A Delectable Delicacy.
Riki: Riki not like Bunnia either! Riki not like getting chomped!
Pokapoka: Why would Bunnia eat you? Bunnia get sick from eating you! Bunnia stay well away from you!
Riki: Meh! Riki taste like prize Nopon meat! Every monster want to eat Riki!
I dunno why, but I find the NPC Kenny Rohan's walking animation bloody hilarious. He looks like he's speed-walking everywhere but he's horrible at speed-walking.