I remember the first time I saw one of those Flash-based "page turning" interfaces. I was sitting in a conference room in Minneapolis and an excited sales guy was pitching his company's tool, which could take newspaper pages and put them online as a print replica, saving us from all that messy Web stuff. He was so earnest and proud.
I was horrified. The Web isn't print. The Internet is a new medium with unique strengths. The whole idea was just ... sacrilege.
I've changed my point of view somewhat over the years, for several reasons: