Interactivity is a hard subject to tackle mainly because alot of people don't really know what it means or implies.  I think this is a sign that people will have a hard time catching on to the concept.  There are in fact a couple various definitions of what exactly Interactivity means.  Some products like DVD-ROMs have interactive features but some aren't really interactive.  Some are just add-on feature that a regular DVD can have.  Today there are a limited number of Interactive features on any medium.  Companies dont seem to be sure what the consumer want in regards to Interactive features.  Consequently, many of the  features on the products aren't anything the consumer is interested in.  Companies have hit some home runs in terms of interactive products.  The features Bill Gates added on his X-Box have had video gamers drooling have become a big hit. It seem to me like the nation is going through a video game frenzy.  With all the new gaming consoles and features many have not been able to resist.  There are even places today where can go in a computer lab and connect with everyone else in the lab and play games against each other.  The produsts that have been released are wonderful but companies must first learn what is important in developing an interactive product.  That is something I can't even figure out.