A new Lassie is quite ‘Wonderful’; Pippi goes to Sweden; kids who come to the rescue in a crisis

Matt (Thomas Guiry) and Jennifer (Brittany Boyd) are unhappy when they must leave the city for a rural area. But they find something to cheer about when they adopt a stray collie and name her ... Lassie, on The Wonderful World of Disney (ABC, Sunday at 7 p.m.). For the family.

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Children discuss what to do and what not to do in an emergency on Nick News Special Edition: Emergency? Call a Kid, (Nickelodeon, Sunday at 8:30 p.m.). The show, hosted by Linda Ellerbee, focuses on kids using common sense in crisis situations to help save lives. For ages 8 and above.

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Ruth (Phylicia Rashad) takes off for the weekend and leaves Hilton (Bill Cosby) with the chore of getting a vent fixed in the coffee shop on Cosby (CBS, Monday at 8 p.m.). The place accidentally is turned into a wild dance scene including a conga line through the neighborhood. For the family.

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Little genius T.J. (Tahj Mowry) goes on-line in Smart Guy (WB, Wednesday at 8 p.m.) to find a date for Dad. He succeeds but then finds himself missing the time he spends with his father. For ages 6 to 11.

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The rambunctious 9-year-old with the active imagination and pigtails comes to HBO in a new animated series. Pippi Longstocking (HBO, Saturday at 7 a.m.) and her friends debut with “Pippi Returns to Villa Villekula,” in which Pippi goes to Sweden and causes trouble for her new neighbors. The show will air Saturdays and Sundays at 7 a.m. For ages 6 to 11.

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Toon Disney, the new channel that celebrates 75 years of Disney animation all day every day, comes to the Disney Channel for one day only with Disney’s Fab Five 4th of July (Saturday from 7 a.m. to 11 p.m.). The cartoon fare, starring Mickey, Minnie, Donald, Goofy and Pluto, includes “The Three Caballeros,” which celebrates Donald’s birthday and ends with an elaborate fireworks display. For ages 5 and above.