I'm not sure I agree about Rosie being the worst looking in high definition, though I'm not sure I've ever SEEN her in high definition. I don't watch THE VIEW on any regular basis, and the last time I did, it wasn't in HD. Perhaps they've switched over recently.
I really think David Caruso looks awful on CSI: MIAMI. His face looks ashen compared to the glowing counternances of his fellow actors, and the HD camera spares us not a single wrinkles, line, or freckle. I'm not sure he wears any make-up either, which also gives us a "what you see is what you get" picture.