Arnold Schwarzenegger flexes his box office muscle with The Running Man, a futuristic thriller directed by former Starsky and Hutch star Paul Michael Glaser.

Sneering rocker Billy Idol hits No. 1 with his cover of Tommy James' ''Mony Mony,'' while teen sensation Tiffany ranks No. 4 with her rendition of James' ''I Think We're Alone Now.''

NBC's Thursday-night sitcoms -- The Cosby Show, A Different World, Cheers, and Night Court -- occupy Nielsen's top four slots. In 1997, by contrast, the new Cosby struggles, Ted Danson's sitcom Ink has spilled, and World costar Marisa Tomei has an Oscar for 1992's My Cousin Vinny.

And in the real world, Jessica McClure (left), the Texas tot who spent 58 1/2 hours trapped in a well, leaves the hospital after five weeks. In 1989, ABC will air a movie about the ordeal, Everybody's Baby, starring Roxana Zal.


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