Saturday prime time

“Mercy” – Veronica tries to save a pregnant woman in the aftermath of a car wreck; Dr. Harris calls for a hearing to determine Veronica’s future at Mercy Hospital; Sonia helps a sleepwalking patient. (Repeat) 8 p.m. on NBC.

“NCIS: Los Angeles” – Sam (LL Cool J) learns that his former Navy SEAL colleagues are involved in the case of a murdered drug dealer. (Repeat) 8 p.m. on CBS.

“Law & Order” – Detectives find that DNA evidence seems to link the murder of a CSU investigator and an attack on a young journalist. (Repeat) 9 p.m. on NBC.

“Strikeforce: Fedor vs. Rogers” – Fedor Emelianenko vs. Brett Rogers, heavyweight match; Jake Shields vs. Jason Miller, middleweight title; Gegard Mousasi vs. Rameau Thierry Sokoudjo; Fabricio Werdum vs. Antonio Silva. From Chicago. 9 p.m. on CBS.

Saturday late night

“Saturday Night Live” – Country singer Taylor Swift hosts and performs. 11:29 p.m. on NBC.

Sunday prime time

“Brothers” – Mike’s financial troubles seem to be over when he is given another chance to play for the NFL. 7 p.m. on Fox.

“American Dad” – Steve must become the man of the house when Stan relives his childhood. 7:30 p.m. on Fox.

“The Amazing Race 15” – One team encounters a speed bump while racing through Stockholm; a team returns to the site of a roadblock; host Phil Keoghan. 8 p.m. on CBS.

“Extreme Makeover: Home Edition” – The team rebuilds the home of a family whose father is a wheelchair sports champion and mentor to disabled Iraq War veterans; Kellie Pickler is the celebrity volunteer. 8 p.m. on ABC.

“Family Guy” – Brian becomes the laughingstock of the family when he starts dating an older woman. 8 p.m. on Fox.

“NFL Football” – Dallas Cowboys at Philadelphia Eagles. 8:15 p.m. on NBC.

“Family Guy Presents: Seth & Alex’s Almost Live Comedy Show” – The variety show features animation, people performing memorable musical numbers from the show, comedy sketches, and celebrity guests. 8:30 p.m. on Fox.

“Three Rivers” – Lisa witnesses a boy being crushed by a ride at the fair. 9 p.m. on CBS.

“Desperate Housewives” – Susan believes that Katherine might be Julie’s assailant. 9 p.m. on ABC.

“Family Guy” – Quagmire assumes responsibility for a baby Peter finds that looks just like him. 9 p.m. on Fox.

“The Cleveland Show” – Cleveland Jr. takes a vow of chastity when Cleveland has “the talk” with Roberta. 9:30 p.m. on Fox.

“Cold Case” – The team investigates the death of an accomplished 45-year-old jockey who disappeared within hours of losing a race that he had planned to be his last before retiring. 10 p.m. on CBS.

“Brothers & Sisters” – Kitty faces the visible ramifications of her cancer treatment. 10:01 p.m. on ABC.