Aussie ace Adventus brings the noise NEON to N64! From the Youtube description:
This is a NEON optimised build of the graphics plugin gles2n64 paired with Ari64′s dynarec for mupen64plus running on an OpenPandora rev4 devboard. The board is at 850mhz and its rendering at 800×480 resolution with NO frameskip. It is 25 to 30 fps for the ingame sequences, the mario head is initially ~25fps but drops down to ~16fps after awhile. Sorry about the terrible quality.
More tech talk here.
[Update] Mweston has uploaded his own footage, with sound! He’s running the same version of Mupen64plus, provided by Adventus.