I saw the Leopard Rant and felt the need to post this. 1) Controls are consistent. If you can familiarize yourself with one program, you feel confident that all other apps share the same shortcuts and controls. Ex. Cmd+N opens a new window in almost all apps. Ex. Cmd+left arrow goes back a page in safari, or a song in itunes. I'm not sure if Windows did this, but I sure didn't feel the same confidence that OS X provides. 2) Exposé and Spaces. Do I need to say more? My two most missed features when using a Windows machine. 3) Clutter-Free Desktop. I love being able to have a window fullscreen and not have to rely on minimizing the app to find the shortcut I am looking for, 4) Mac programs are usually more intuitive and flashy. Never noticed this on my PC. 5) Menus are always in the same place. Right in the menu bar. Opinions?