Steve Jobs kept accusing other ppl of copying apple's "innovation", while dear, how much stuff in Apple's new OSX 10.5 leopard are copied from other OSes?
Transparent Menu bar, I guess you all know its in linux for ages.
I want to point to a thing called "cover flow", it really nice, but suddenly I realize how similar it is with the windows XP folder preview. of course you can argue the nice transition animation between two previews as well as better design, but the idea (one by one display a large thumbnail preview out of a bunch of files in the normal file manager) and window structure (left side panel is locations/userful links, right side is files and a big preview) are exactly the same!
Take a Look: