High Definition movies and stills can be shared with family and friends on an HD television via HDMI output, and control slideshows and video using the HDMI Consumer Electronics Control (CEC) interface that is a part of most modern remote controls from HDTV manufacturers.
Any time there's a new technology that empowers the consumer, some people in the industry get nervous because it's all about control, and there are a lot of people in the industry who don't want to see the consumer have control.