Summer is officially here, and with it the first glimpses of the 2008 Summer Olympics games and NBC’s extensive coverage. Look for Olympic diving trials from Indianapolis (2:30 p.m., today, NBC), followed by gymnastic men’s finals (3:30 p.m.) and women’s gymnastics (7 p.m.). The last event will be broadcast taped, while the first two will air live. Look for prime-time commentary from Bob Costas, Al Trautwig, Tim Daggett, Elfi Schlegel and Andrea Joyce. Broadcast will air in high definition.

¢ Two very different documentaries explore the balance between religion and reason, as well as the status of young women in two societies a world apart.

“Religion or Mind Control” (9 p.m., Sunday, MSNBC) looks at the controversial decision by the state of Texas to enter the compound of the Fundamentalist Church of Jesus Christ of Latter Day Saints and take custody of 462 children. The film interviews former members of the church as well as its defenders, or at least people who believe the church is being depicted unfairly and persecuted unjustly.

Several women who escaped from the sect describe a society in which women are forced to submit and be married off when they reach puberty to much older men, who may have several other wives. Women are encouraged to “keep sweet” and never assert their own ideas or personalities.

Both former members and experts contend that the church fits the criteria for a repressive cult and that its practices amount to organized child abuse. Several active members of the faith describe their lives as “heaven on Earth.”

¢ Sela Ward narrates “The Girl with Eight Limbs” (8 p.m., Sunday, National Geographic), an intimate look at a child born to poor Indian parents whose rare birth defect (the presence of a parasitic twin) gave her the appearance of the multilimbed goddess Lakshmi. Shortly after her birth, villagers converged on their hut to behold the goddess. Word spread around India and the world of her miraculous incarnation.

The film follows Lakshmi’s parents as they consider their daughter’s future. Many in their village believe they have been blessed, and some talk about the money that the goddess’s shrine has brought to their poor corner of the subcontinent.

The parents finally opt for a rare and complex surgery fraught with dangers. It will also be the first time a surgery of this nature will be conducted in India – a source of much pride for the medical team and a milestone for a nation emerging as a world economic and technological power.

Today’s highlights

¢ In addition to the network premiere of the 2008 musical “Camp Rock” (7 p.m., ABC), viewers can see videos from the Jonas Brothers and Cheetah Girls.

¢ Warriors defend a village against attack in the 1954 Japanese epic “The Seven Samurai” (7 p.m., Eastern, TCM).

Sunday’s highlights

¢ Day 2 of the women’s gymnastic trials (6 p.m., NBC).

¢ For the third straight night, “Camp Rock” (7 p.m., ABC Family) appears on a different network.

¢ Hit men take out Marshall and Mary’s vehicle on “In Plain Sight” (9 p.m., USA).