Can confirm the Mario Kart 64 + mupen64plus + Accelemymote = win. It seems like the default max_pitch and max_roll might be a bit too low for ideal control sensitivity, so i will increase them in the next release.

Forward and back don't actually do anything on the joystick in Mario Kart, do they? Is it possible to map those to accelerate/brake in the config file? That combined with proximity sensor for fire button would leave only jump uncovered for playing with keyboard closed.

Note that this is only a good option for people with no friends, because receiving a SMS or IM notification makes a big mess of emulation smoothness.