The first screenshots of Windows Vista are popping up on the internet. The remark of Steve Jobs (Redmond, start your photocopiers) has been proven right. Several features of Longh—, eh, Vista seems to be copied from Tiger.

Vista

But, a microsoft developer has the best excuse ever:

“If you are slow (or lazy) in your development, you never can be called a copycat”

Or, like he puts it:

Naturally, some Macintosh users will claim that this is like “Dashboard”. And indeed there are similarities here. But Microsoft has been working on Avalon a lot longer than Apple was working on Dashboard. And Avalon Express applications are designed to be very secure from day 1.

The quote above was taken from this website