"You look radiant!" This is what my boyfriend says to me when I put blush on my cheeks. It's something about having that little pinkish glow that sparks radiance and gives your face a boost. Besides mascara, in my opinion, blush would be one of the must-have's when it comes to cosmetics.
Over at beautynomics.com, there's a blush review on the Laura Mercier, Shu Uemura, Nars, and Cargo brands of blushes.