There's a lot of OS-X look-and-feel in Win7. Most of it is subtle, but to someone like me who uses each one for many hours every day, the similarities are definitely there.
Nothing I'd consider remotely worth a lawsuit, mind you. Just the usual "Hey that's a good idea, let's adapt that to our situation" stuff.
I don't know that I could point to any particular individual things at 1:20 AM, I'm tired and am dropping off the thread for the night soon. But they're there.
If you get into specifics, boys, please argue like gentlemen. thanks :)
Thanks all, for an interesting and pleasantly civil thread so far. I appreciate it.