A long time ago, I made a rather odd observation in Super Smash Bros. Melee: Fox McCloud wags his tail to the tune of the Dr. Mario music, on the Mushroom Kingdom II level.
Fox McCloud is cute, Fox McCloud's tail is particularlcy cute - so having Fox McCloud wag the cute tail to the rhythm of the cute music is pretty cute!
Emergent gameplay at its finest.
So I made a rather silly, short video capture commemorating this. It's on gamevideos.com too, but needs QuickTime. The YouTube version may not be in sync. (Not sure if I keep it around either due to that fact. might need to make a better version.)