The 55th Annual Grammy Awards (7 p.m. Sunday, CBS) will have a hard time topping the 54th. Last year, it reached more than 39 million viewers, its second-largest audience ever and the most since Michael Jackson moonwalked away with most of the awards at the 1984 ceremony.

As CBS recalls on “The Grammys Will Go On: A Death in the Family” (8 p.m. Saturday), last year’s show was held in the wake of singer Whitney Houston’s sudden death, which sparked viewer curiosity. Even without such tragic inspiration, the Grammys telecast promises to be the biggest TV event of the week, attracting the largest audience between the Super Bowl and the Academy Awards. LL Cool J hosts.

• The 2013 movie prequel “Battlestar Galactica: Blood & Chrome” (7 p.m. Sunday, Syfy) goes back to the early stages of the Cylon War, the battle between humans and robots that set this epic series in motion. Luke Pasqualino (“The Borgias”), Ben Cotton (“Stargate Atlantis”) and Lili Bordan (“Silent Witness”) star.

Gee, an ambitious movie based on a hit series. That’s the kind of February sweeps programming that used to show up on networks. Oddly enough, Syfy is a cable cousin of NBC.

• AMC offers new episodes of “The Walking Dead” (8 p.m. Sunday), the gory zombie Western that has emerged as one of the most watched dramas on cable. Tonight, a new arrival at the prison compound sparks concerns. “Talking Dead” (9 p.m. Sunday, AMC), the chatty recap show that helps make sense of the brain-splattering action, also returns and expands to one hour. Help yourself.

Sunday’s other highlights

• Scheduled on “60 Minutes” (6 p.m., CBS): rating the credit-rating agencies; interviews with the five American survivors of the Algerian terror attack; Daniel Day-Lewis and Doris Kearns Goodwin.

• Cora hatches plus-sized revenge on “Once Upon a Time” (7 p.m., ABC).

• Molesley brags about his cricket prowess on “Downton Abbey” on “Masterpiece Classic” (8 p.m., PBS, check local listings).

• Hannah finds herself attracted to an older man on “Girls” (8 p.m., HBO).

• “Revenge for Real” (9 p.m., ABC) recalls a Miami murder.

— Copyright 2012 United Feature Syndicate, distributed by Universal Uclick.