While walking around Best Buy yesterday I noticed a new sign had recently gone up over by the gaming department. How I missed this until now is beyond me since I work there, but if you pre-order
Kid Icarus: Uprising for the 3DS, you'll receive a code by email for a free download of 3D Classics: Kid Icarus. The code will be sent around the time that 3D Classics: Kid Icarus is released. It also seems that this can be done either in store at the pre-order kiosk or online. This definitely just gave me a reason to pre-order
Kid Icarus: Uprising. I mean, I was going to get it anyway, but a free copy of the NES classic? Heck yeah!
EDIT: Turns out this offer also applies if you pre-order the game from GameStop and Amazon.