Chopin - Scherzo No. 2 in B♭ Minor - Arpeggios
The only reason I ever wanted to originally learn this piece was so that I could play the sweet arpeggios in the middle section. Re-learning the entire thing would take more than the 3-5 hours I allot myself each week for these projects, so I spent a few hours re-memorizing and practicing the middle section arpeggios. God, they're so good. I highly recommend listening to someone more talented play them.
Amusingly, and unrelatedly, this scherzo is featured in a Woody Woodpecker cartoon, wherein the piano catches on fire.
This is a fairly decent recording as I only hit a few wrong notes and mostly remembered the correct order in which order they're played.