Windows Vista FTW?!
Wow, I appear to be in the minority here as someone who prefers the Windows style of menu bar. I can understand if you're all using MacBooks or something (are you?) as their resolution is pretty low and you can very quickly move the mouse to the menu bar.
But what about the rest of us, not just those with multiple monitors, but those of us who have a 1920x1200 display like on the 24" iMac, 23" ACD or 17" Hi-Res MBP? Or even worse those who use the 2560x1600 30" ACD! Let's say you've got the Calculator application open and it's at the bottom right corner of the screen. Then you feel like doing some conversions (e.g. currency, weight etc.). You have to go all the way to the top left of the screen to access the menu option while at the same having to keep moving your eyes/head down to see the application window. On a large monitor this gets extremely annoying!
I understand certain applications, where they take a lot of screen space up, can make do with a unified menu bar. But for applications with smaller windows, it just doesn't make any sense. I find having a toolbar a godsend in these cases. BUT the problem with the toolbar is that it takes up precious screen space and some of the toolbars and icons are way too big in my opinion and look pretty ugly actually (Xcode comes to mind) - like I'm using a Linux program or something! So I end up having the toolbar closed resulting in windows looking so much sleeker but at the expense of having to move my mouse more! Argh.
No, I think the best idea, as some people have said, is a compromise. Believe it or not, I think Windows Vista (shock horror!

) has the best implementation. If you notice for a lot of Microsoft programs the menu bar is hidden by default now and all you have to do is press Alt to bring it back. If you don't like it then you can simply choose to have it on all the time. The important thing is that the user gets the choice depending on what application they're using.
