This may seem unrelated, but in Wikipedia's Usopp's article, it is said that his nose doubles as a crosshair. Is it true, or a fan-based assumption?
Well, perhaps… His father doesn't have a nose like that and he's the sniper in Shank's crew. Maybe Usopp's nose will give him the advantage if they ever get in a match.
I think it's episode 134. Usopp helps this little girl put on a fireworks show for her deceased parents, who died from their first attempt at setting off the giant firework. It's sweet. It didn't even feel like filler other than it was stand-alone.
Oh yeah, that was a good one too. ^____^ I liked the part where he shot off his own fire work and was like (spoiler!)
"What, that's it?' And it's like this little fart in the sky compared to all the others. And Nami's all "What was that?"