Anyone else use yoink on OSX?
http://www.eternalstorms.at/yoink/Yoink_-_Draggings_a_drag_no_more/Yoink_-_Draggings_a_drag_no_more%21.html
It pops out a little "shelf" from the side of the screen when you're dragging and dropping stuff around, so you don't need multiple windows open. You drag the item(s), the shelf appears, drop it on the shelf, go and do some stuff, then drag it off the shelf and drop it in the new location.
It's not a life changer, just really, really handy.
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Bit of backstory, I've been a fan since I first laid my hands on a Macintosh Classic II, back in the day. It was sooo far ahead of anything else I'd seen back then. Now on a 27" iMac (late 2011) i7 @ 3.4 GHz, 16GB and modded it with an OCZ Vertex 4 512GB SSD. I love it, it's as quick today as the day I bought it and it's never so much as lost a byte of data in 3 years. I can't say that about any other computer I've owned, on top of that if I have to use Windowz for something, I've found VMWare runs Windows 7 better than most PCs I encounter in my daily working life