Holding Out For a Hero? Here's one for the End of Ideas Hall of Fame: The '80s TV comedy The Greatest American Hero is being talked up for a feature-length film revival. Writer-producer Stephen Cannell and star William Katt tell the LAT it's just a matter of time before their series about a schoolteacher-turned-bumbling crimefighter returns for a new generation. "We have a script," Cannell warned. "We have a director. I'm in the middle of making the deal now for distribution. We have a bite now. It will happen. [...] I want all the 7-year-olds to be able to go and their parents will remember the show and want to share it with them." It it OK if we just point them to the DVD set and call it good? Please? [LAT ]