Honestly, no, not really. I can't think of any features from the Mac that Windows copied, that I personally benefit from.

However, Microsoft under Ballmer thrashed around trying to copy other things from Apple, things that did not belong on a desktop PC, and made life more annoying for a great many Windows users as a result. Like another poster above suggested, another five years of that approach would have brought Microsoft down to the lowest level Apple ever reached.

IE stagnated for a long time before firefox arrived to compete. I imagine that could have played out with Windows too, were it not for the success of Apple.