My boss and I are at a coffee shop. We had to buy $5 worth of stuff for one of us to get a wireless connection. We both have Macs. Within 15 minutes, we were able to create a bluetooth network, and I'm sharing my wireless connection with him over bluetooth.
I'm positive this sort of thing would work in Linux too, but the fact that we got it working in 15 minutes without any documentation is truly a testament to Apple's user friendliness.