1.   But these rarely allow the viewer to interact in a way that transcends the component parts.

2.   The boxes attach to TV sets and enable the viewer to interact with the program.

3.   The channel will use a Web site to enable viewers to interact with program hosts, guests and other viewers.

4.   The company makes software that allows viewers to interact with sports and entertainment shows.

5.   The galleries overwhelm and vaporize the art to such an extent that the viewer can hardly interact with it at all.

6.   Viewers can interact with the channel via a related Web site.