The new Leopard GUI versus the old Tiger GUI in regards to titlebars. (Tiger on the top, Leopard on the bottom) I felt like the corners Leopard had a smaller radius on them than Tiger did, so I checked, and they do.
Small detail, doesn’t really matter. I feel like a pretty big geek for noticing without seeing them side-by-side.
It doesn’t get much slicker than that. The machine is using Virtual Desktops (I use Virtual Desktop Manager, I imagine it is probably the same program being used here). You run different OSes in different instances of Parallels, a virtual machine client, in different desktops set to full screen. Macbook Pro, you will be mine soon!