TV Guide Sky Showcase Thursday

Seasonal edition of the documentary looking at the work of the Thames Valley Police's elite Proactive Squad. This fast response unit uses unmarked cars with video cameras on board and covers all aspects of policing, from armed robberies to domestic incidents. Plus, traffic video clips from around the world, and advice on safe motoring

Documentary following the work of Ireland's border force officers as they fight to stop gangs of organised smugglers from bringing drugs, money, guns, cars and even exotic animals into the country

The team's wormhole triggers an ecological disaster that threatens a friendly planet, and O'Neill discovers its usual guardians, the Asgard, are unable to help, as offering assistance would violate a treaty with the Goa'uld and jeopardise other protectorates. Sci-fi drama, starring Richard Dean Anderson

Cassandra suddenly develops uncontrollable telekinetic powers, which threaten both her own future and that of the team. Sci-fi drama, starring Richard Dean Anderson, Michael Shanks and Collen Rennison

Lisa is teased mercilessly by her classmates for having a weight problem. Marge learns school bully Nelson Muntz has never had a paternal role model and invites him to live with the family - much to Bart's dismay

Marge is left feeling jealous and dejected by an encounter with old school friend Chloe (guest star Kim Cattrall), who has found fame, fortune and success as a high-flying investigative journalist

Commander Hicks agrees to replace a seriously wounded sheriff's deputy in a hostage crisis after a family resisted eviction after having lived for four generations on the property. Hondo helps his father through a medical crisis and Chris' relationship with Kira and Ty reaches a critical juncture

Depressed at getting old, Bart wears a T-shirt to school bearing an adult joke, and is accosted by a marketing manager wanting to promote the new product. Meanwhile, Homer helps Lisa build a nuclear bomb for a school science project. Eric Idle guest stars

Career aptitude tests have an unexpected effect on the Simpson kids, prompting Lisa to fall in with a bad crowd while perennial troublemaker Bart finds a new respect for law and order