Monday's Best Bets on TV

“Elvis: Viva Las Vegas” (8 p.m., CMT): Elvis would be enough, of course, but there is plenty more in “Elvis: Viva Las Vegas.” The special details how Presley changed the gambling town and how it changed him, telling the tale through interviews and rare performance footage. There’s also testimony to his legacy from a range of artists performing Presley classics, including Toby Keith and Joe Perry with “Mystery Train,” Faith Hill singing the gospel classic “Peace in the Valley,” Chris Isaak and Brandi Carlile dueting on “Love Me Tender,” Three 6 Mafia with “In the Ghetto,” Chris Daughtry singing “Suspicious Minds” and Celine Dion with “Can’t Help Falling in Love.” Journalist Elizabeth Vargas is the host.

“Summer Olympics” Men’s gymnastics, swimming, beach volleyball, diving (8 p.m., NBC): U.S. swimmers Michael Phelps, Aaron Peirsol and Natalie Coughlin are expected to go for gold live.

“The American Mall” (9 p.m., MTV): If you can set a musical in a high school, why not a shopping center? “The American Mall” invites us to sing and dance along as it focuses on the trials of a singer-songwriter (Nina Dobrev) who works in her mom’s music store, and her boyfriend (Rob Mayes), a mall janitor and wannabe rocker.

“Saving Grace” (10 p.m., TNT): Why is our sweet little Grace on “Saving Grace” such a magnet for oddball happenings? Tonight, a big stash of cash is found in her Porsche. The ensuing probe focuses on a wealthy developer, a slain highway patrolman, and the car’s previous owners — including football coach Barry Switzer, who appears as himself.