The one in "Timeline" conveys our bumbling heroes into a medieval world, where they change history with nearly every hiccup and someone actually agonizes over killing a man who has in fact been dead for 650 years. "Timeline" is a glorious so-bad-it's-good entertainment that, whatever audiences' initial reaction is in its theatrical run, should prove a hit in home entertainment. While it may be surprising that such a corny/fun movie would come from tentpole director Richard Donner working from a novel by Michael Crichton, who usually nails the scientific-fiction stuff, one is grateful for such an unpretentious diversion prior to all the solemn and sometimes downright gloomy holiday films.

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