Doesn't work using Mac - OS 10.8.1. Crashes all applications related to movies, photos. Tried it on Mac Book Pro with OS 10.7.5 and it worked as advertised. Great picture.
Update: As of 9/22/12 it works now with OS 10.8.2. Whatever it was that made it incompatible with 10.8.1 has been fixed. Five stars.
As far as using this camera with an iPad, it requires power to run the 4 LED's and the camera which is not supplied by the iPad as it is on the USB port of a laptop or desktop through the Apple camera connection kit. According to the reviews of the ACCK on the Apple Store site, there is only enough power from the iPad to read the camera memory, not enough to power any devices. Someone should try it, though - it would be sweet to have the portability of the iPad with this camera.
No it does not come with a mirror attachment. You can however buy a couple different accessory kits from Amazon. I use the 30° 45° 60° mirror set. Works pretty good for checking cylinder wall and piston condition, vavles, crank damage and such.
Not that I'm aware of. USB is a computer communications protocol that requires decoding and processing before display. I use a Windows based netbook for my camera so I can save images. You could probably get it to work with a tablet if the drivers are compatible, but I think that's the best you're going to do.