K.K. Song
Animal Crossing: City Folk PROTIP:

(Minor spoilers)

Make sure you guys sign on to the game with WiiConnect24 enabled to get your Pikmin hat while they're still available! They also did a St. Patrick's Day Shamrock hat awhile back, which I meant to post about, but forgot. They're both very cool, and little surprises like this really add to the game.

(End spoilers)

Another interesting tidbit I found out about today is Totaka's Song. You may or may not know about it, but you've almost certainly played one of the games it appears in. It's an interesting easter egg- a short hidden song with 19 notes, which appears in presumably every game which Kazumi Totaka has been the music composer for.

It's relevant to this post because Kazumi Totaka AND his song are in Animal Crossing. However, AC fans know him as K.K. Slider. He's actually called Totakeke in the Japanese version (Totaka K. - say it aloud), and Totaka's Song is in every version of the game (K.K. Song - you must request this song to hear it).

This really weirds me out, because it's been right under my nose all this time! I've known about Totakeke, K.K. Song, and the Mario Paint easter egg for years, but I never put all of this together until today.

Anyway, here's an article detailing all the games with Totaka's Song, and some YouTube videos with audio of it (1 2 3) Apparently, Totaka's Song has not yet been found in several games he's worked on, such as WaveRace 64 and Wii Sports. Should be most interesting to see if someone will uncover it!