The last Saturday for the 2012 London Olympics (NBC, 8 p.m.) means finals in the men’s 4 x 100 meter relays, 5,000 meter javelin as well as women’s 4 x 4,000 meter relay, 800 meter and high jump. And there’s men’s diving and women’s volleyball to boot.

It’s not just the old dog who owns the Playboy mansion that worries the blondes there; it’s the small dogs they get to keep them company. Sometimes they bite one another. This is where the “Dog Whisperer” (Nat Geo Wild, 8 p.m.) comes in.

Turns out the case is not even the most interesting of the evening but problems of ex-playmates out of the mansion are also addressed with their snippy dogs not their boyfriends.

One of Leonardo DiCaprio’s most unexpected roles was as the bulldog-faced chief of the FBI in “J. Edgar” (HBO 8 p.m.). George Clooney makes a good candidate in the political thriller “The Ides of March” (Starz, 9 p.m.) .

Elsewhere The Rock stars in “The Game Plan” (ABC, 8 p.m.) but “The Rock” (Encore, 10 p.m.) stars Sean Connery and Nicolas Cage.

The new B movie on Syfy tonight is “The Boogeyman” (Syfy, 9 p.m.), which sounds much scarier than the “Mothman” (Syfy, 7 p.m.) that precedes it.

It’s got to be better than the nearly unwatchable “The Music Teacher” (Hallmark, 9 p.m.) which stars Annie Potts in the title role. Her program is threatened so former students rally together and put on a fundraising show – one with terrible songs.

A third original TV movie tonight, “Taken Back: Finding Haley” (Lifetime, 9 p.m.) stars Moira Kelly as a mother who thinks she’s found the person who abducted her daughter a dozen yars before.

Who’s ready for Shark Week? Tracy Morgan is. He asked the guys on “Tanked” (Animal Planet, 9 p.m.) to make a tank for his pet sharks.

“Are You Normal, America?” (OWN, 10 p.m.), a new show from Oprah’s network asks. Well, you are watching a game show on a Saturday night.

“Welcome to Sweetie Pie’s; An Extra Slice” (OWN, 8 p.m.) doesn’t have much to do with pie. Rather, it’s about Tim and Jenae moving their baby home for the first time.

I used to love working in an office where everybody did James Mason impersonations. James Mason does his own all day on Turner Clasic Movies with a primetime showcase that begins with “Lolita” (8 p.m.) and continues with “The Desert Fox” (10:45 p.m.), “A Star is Born” (12:30 a.m.) and “Mayerling” (3:30 a.m.).

Fleet Foxes play a replay of “Austin City Limits” (PBS, 9 p.m., check local listings).

No “Saturday Night Live” tonight, but there is “Saturday Night Fever” (TV Guide Network, 7:30 p.m.).