My phone runs Linux. My tablet runs Linux. My netbook runs linux. My Set top box runs linux. My Entertainment Computer runs linux. All by default out of the box. My Email server/Social network/offsite backup solution runs linux. I do keep a Win7 box handy, but even that has a Linux partition.
No CompileKernel WorkOutDependancies nonsense. The only reason I know this (besides being a geek) is by digging in the "About This Device" thingy and reading the kernel version.
When do you think Linux will become mainstream?