Sm64ex-coop is amazing! I never got far in super mario 64, the camera gave me headaches. I did know it was a revolutionary game for it's time though.
With sm64ex-coop, you can enable free look with the camera, and if you set it up right it feels just like the camera in many modern games. There are hi-res texture packs (Render96) available that also look amazing. And finally, they added a bunch of mods and features, one major one being the ability to play multiplayer.
Oh yeah, and it's cross-platform, runs on a whole bunch of different devices. I highly recommend checking it out, it's sooo much better than anything you'll get from an emulator.