As much as i dislike macs, i am forced to use/support/script for them, thanks to upper management being turtleneck zealots; as a result i frequent the apple store. All of our admins are on macs(for the boot time), once at the desktop they then boot into a windows 7 vm to do real work; it is infuriating.
I overheard the following conversation, with a genius:
Customer: Hey bro, i was riding on my fixed gear, and my water bottle came open in my pack, and got all over my pro
"Genius": yeah bro i had that happen to me, i had to get a water bottle holder for my bike
For some reason, i found it hilarious.
But the truth is, most of the issues fielded by the genius bar, are physical damage(entire device replacement) and how to save pictures/videos. The average mac user is far below the curve.