When WinRT tablets hit the market, I will officially declare it the Post-PC era.
iPad =/= PC, more like dumb-C.

The most frustrating part is that Linux could've been the Post-PC driver.
I mean imagine an ICS-style OS but with full-fledged Linux and a robust development framework.

More specifically, MeeGo!
Here's how it should've been planned:
- 5,000 top Apps from iOS and Android from the get-go
- EPIC 4G specced model smartphones in 2010
- Amazin Fire specced tablet in 2011
- Major update in 2011/2012 to incorporate some Linux apps, major push for MeeGo as top linux distro, improvements across the board, sponsor by SmarTVs and appliances
- Competitive features against Win8; only cheaper, more widespread, more apps before end-of-2012 (eg Current state of Android).