neat thing people might not be aware of:
If you load a DS game into a 3DS, and then hold start while starting the game, it will boot into the original DS resolution, for pixel-perfect unscaled accuracy.
@Felthry we did not know this!
@Felthry same goes for GB/GBC virtual console games - with a 3D GB/GBC to boot!
@noctilucent I had no idea about that!
another nintendo easter egg: you can change the sound effects used in the gamecube logo screen. Holding Z on one to three controllers changes it to squeaks, and holding Z on all four controllers changes it to kids laughing.