SSBB: undocumented Peach tech/exploit
Something interesting is that if you do a downsmash with Peach after doing her downtilt, depending on when you do it she'll slide backwards either really short, or really far. Odd thing is it scales depending on how big/small you are meaning that if you're HUGE, you'll go VERY far back. You can test this out on your own unmodded copy of the game, as I tested this on my actual Wii with my copy I had sense I was 12.