A computer draws a yellow line on the broadcast version of the field based on a color key, which only replaces certain shades of green. They can join a trivia contest before the game and during commercials. Enhanced TV is one of the first large-scale efforts to encourage fans to surf the Web and watch TV at the same time. It debuted during last year's Fiesta Bowl and has been available on every Sunday night and Monday night football TV broadcast this season. Jonathan Leess, executive producer for Enhanced TV, is encouraged by the results .
Experts agree that technology to fuse television and the Internet is a few years away.
They'll know some things that work and some things that don't work so that when actually there is interactive TV available, they'll be able to program for it. True interactive TV will make television and the Internet work together on one screen. For example, a viewer might be able to call up video replays of one play and watch them in the corner of the screen while live action continues. Then, he or she might access a camera that is following a favorite player on every play. At Fox Sports, interactive TV is expected to be a reality by the time it broadcasts the 2002 Super Bowl.