Sadly, the SuperNES emulator for iPad is not an official app. I say sadly because it goes extremely fast and, according to Snes4iphone developer ZodTTD, "it looks, sounds, and plays great." Indeed it does.
I just got my iPad and the first thing I did was install a build of snes4iphone made specifically for non-jailbroken iDevices. This is the video of the first test. I have 2x scale enabled on the iPad to make it full screen, and I enabled smooth scaling in the emulator. I'm playing Super Mario Kart on my iPad and it looks, sounds, and plays great! This is going to be amazing.
The scaling is going to be needed in any case for all these emulators, since their maximum resolution matches the iPhone, and the iPad screen is comparatively huge. I wish Nintendo could stop with the snubbing and realise that they may have a huge business opportunity by selling their old stuff in an official NES/SNES/N64 emulator with its own storefront. [Techtosh]