The sad thing is, Cranky Kong DLC for Mario Kart 8 is actually a pretty plausible thing for him to announce at that show.
I don't expect much from Nintendo's appearance at this show, not when they have their Directs to better sell their own message. I'd love to see more from Star Fox and Zelda, and maybe even a new Metroid announcement, though (given Reggie's much-discussed Metroid pin at last year's VGXs). Still, I'm sure that won't stop Neogaf from going nuts and driving up everyone's expectations so they can be summarily disappointed, as usual.