Oh for sure they did, and thank goodness for that.
But then Apple ripped off Konfabulator widgets, and made their widgets which are now apparently gadgets on PC, and are ripping the multiple desktops off Linux in their next version etc etc. It's just OS evolution. Dog eat dog world, rip off what works (or in an Open Source world, take what works and improve on it, forget competition).
However, look how long it took for Apple to 'rip off' the amazing idea of a three button mouse. I have much venom for Apple even though I have one (and a PC) and a love/hate for Apple's marketing genius.
The video about PC's being for work only....Another example of Apple marketing genius:
Apple, you seem to have forgotten that, behind the PS3, the PC platform is the worlds most powerful and fastest advancing gaming platform.
Alienware for example, produce a gaming PC off the shelf, with waterchilled quad graphics processors, a seperate dedicated AGEIA PhysX game physics processor, 4TB of storage... Come on Apple, does this PC look like a work machine or does it just mean PCs can be all things to all men and an Apple is.. well, limited to being an Apple. Even if I did install windows on an Intel Mac, it still wouldn't work with all this fancy hardware thanks to all Apple's proprietary limiting hardware.
OS X is pretty though ;)