I believe dianaTs picture is balayage, which I have. The stylist paints the colour on, which gives a subtle broken up effect rather than a line of brown then blonde. The skill is placing it in the most flattering places, so more to frame the face, less toward the back etc.
Mine looks v much like in that picture and it gets a lot of compliments, and is flattering to my face. So, whether it's passé or not, I like it!