Hm.
I was thinking I might break out Wind Waker and play it some. It's been awhile.
So, I go over and pull the case out... crack it open... hm. It's a two-disc GameCube case with two copies of Wind Waker in it.
Now, this isn't like the previous episode where, apparently,
I picked up a DS Rumble Pak somewhere and tucked it inside of Metriod Prime Pinball and didn't know it until sometime later. This time, I actually went through the effort of swapping out the single disc case to a dual disc case. I've done this a couple of other times (Kirby Air Ride and Pikmin 2 come to mind) where I've bought a disc-only (or artworkless) copy of the game (KAR for Broadband and Pikmin 2 because it's awesome)... but I didn't know I had done this with Wind Waker.
Either I'm getting old and forgetful or the Nintendo elves are sneaking into my house, leaving me extra Nintendo stuff.