Wednesday's Returning Shows

JACK and JILL
A surprise renewal after its low-rated first season, the dramedy will temporarily take over Felicity's time slot starting in January — and ''there will be no dramatic hair changes,'' says exec producer Randi Mayem Singer. Happy couple Jack (Amanda Peet) and Jill (Ivan Sergei) will meet each other's parents, and aspiring mannequin Mikey (Simon Rex) hits the runway. Says Singer, ''If you've ever seen Simon do his 'angry model walk' and his 'friendly model walk,' you'll know how funny that's going to be.'' We'll take her word for it. (January)

LAW and ORDER
''Crime is a maddeningly renewable resource,'' observes creator Dick Wolf, who'll continue to tear stories from the tabs for the drama's 11th season. Among them: a ''wilding'' incident in Central Park and a woman randomly attacked by an ex-mental patient. And it wouldn't be fall without a new Law & Order costar. Double Oscar winner Dianne Wiest (Hannah and Her Sisters, Bullets Over Broadway) replaces Steven Hill as the new DA, Nora Lewin. ''I see it as an opportunity to keep the show fresh,'' says Wolf of his revolving-door casting policy. ''You get cats who have been together for many years, and there are not many new places to take them.'' Um, did he just say ''cats''? (Oct. 18)