THE townsfolk of Amity have conveniently suffered a collective bout of amnesia for Jaws 2 (Pearl, 9.30pm, Original Running Time 117 mins). Not three years after one humongous shark was turning them into lunch in the original film, they're back in the sea blithely ignoring Roy Scheider's warnings that there's another one out there. This time round some dumb teenagers are the shark bait, including Scheider's son - just to add some personal interest. The shark scenes do deliver, but the film doesn't achieve the same sense of menace as the first. Talking of the original, I loved the way Pearl's trailer gave the whole game away by showing Robert Shaw disappearing down the Great White's throat. KIRSTIE Alley bluntly described actress Shelley Long as stupid for giving up her role of waitress Diane in the record-breaking TV series Cheers for a career in the movies. And, while it's easy to say that with hindsight, Long's film career has hardly lived up to expectations, consisting mostly of a string of interchangeable ''kooky'' roles. Now, Long's making a welcome return to television with a new series Good Advice (Pearl, 6pm) in which she plays Suzie DeRuzza, a renowned marriage counsellor who discovers her own marriage is up the spout. She arrives home after a publicity tour for her latest book to find her husband Joey (Christopher McDonald) in bed and a naked woman hiding in the closet. Treat Williams also stars, as hunky divorce attorney Jack Harold, who's sympathetic until he finds himself competing with Suzie for his clients. ROBIN Williams plays a firefighter who retires to a West Indian island and teams up with Jimmy Cliff to turn a rundown beachfront property into a seaside resort, in Club Paradise (World, 12 midnight). The script lacks a certain something - namely laughs - but the setting's pleasant enough. SET in that vague Hollywood time, ''the near future'', Cyborg (World, 9.30pm, ORT 86 mins) manages to sink to new lows even by the rock-bottom standards of post-apocalyptic garbage movies. Jean-Claude van Damme really stretches himself playing (gasp) a soldier of fortune whose task it is to protect a planet-saving cyborg from the savage gangs who roam the Earth, raping, plundering and generally making a nuisance of themselves. Violent and revolting. FOLLOWING ''I'M warped. I am. You don't do this sort of thing if you're all right.'' These and similar pearls of wisdom may be savoured by schlock fans in Stephen King's World of Horror (STAR Plus, 9.30pm). The author explains how he came to write horror stories and from whence he gets his ideas. The two-part documentary also includes his favourite horror clips from films like Psycho and Aliens, and ''a trip through the back door that you will never forget''. Sounds intriguing. MEDIA WATCH, this evening (World, 7.30), looks at the topical issue of the media's relationship with the legal system.