During my first use of Windows Vista I found the new start menu awkward. I only like the idea of the search menu, but other than that, I still like the old XP look.

You can bring it back by right-clicking on the start menu, properties, choose Classic Start Menu and click on apply button.

Although I like the old structure of the classic menu of XP, what I do not like is how the color blends to the new Vista theme. Had they made the color the same as Vista while using the structure of XP, it could have been great for me