I'm going to wait until the next advancement in storage technology wipes the walls with these snooty HD-DVD and Blue-Ray technologies.
I think regular DVD's are going to stick around for quite a while. VHS to DVD was a really exciting change, offering a smaller, better, and cooler looking storage medium for videos. The change from DVD to the new formats is better image on high-definition TV's. Also, the short time between DVD and the new formats leaves us wondering how soon the next improvement is going to be, so we wonder if we should upgrade yet.