We've been privy to undocumented Wii features like the 192-Piece Picture Puzzle and the elusive Help Cat for a while now, but did you know that there's a secret Shopping Channel animation of Mario and Luigi swimming together while you're at the download screen?

During a recent roundtable, the developers behind the Wii Shopping Channel talked about how they overcame obstacles with the project, which elements they're proud of, and what they hope to see implemented in the future. One little touch that the developers were pleased to include was this Minus World-esque scene of the Super Mario Bros. paddling through and collecting coins while you download games. It doesn't show up very often, so don't be too upset if you've never come across anything besides the Fire Mario animation before.

We didn't even believe it at first, but Nintendo included a video with the interview transcript to prove its existence. It's a good thing they did too, or we would've gone through our life savings downloading Virtual Console titles, trying to get this alternate animation!

This article was originally published on Joystiq.