Imagine a future in which the sport of boxing has gone high-tech.  Human boxers have been replaced by massive humanoid robots.   And former champions of flesh-and-blood are obsolete . . . .Richard Matheson’s classic short story is now the basis for Real Steel, a gritty, white-knuckle film starring Hugh Jackman.  But “Steel,” which was previously filmed as a powerful episode of the original Twilight Zone television series, is just one of over a dozen unforgettable tales in this outstanding collection, which includes two new stories that have never appeared in any previous Matheson collection.  Also featured is a bizarre satirical fantasy, “The Splendid Source,” that was turned into an episode of The Family Guy.