After surviving another Shark Week with a final replay of “Great White Invasion” (Discovery, 7 p.m.),  Discovery channel turns curious to the world’s deepest questions.

The stylish series, “Curiousity” (Discovery, 8 p.m.), which will feature Morgan Freeman wondering if there is a parallel universe or Maggie Gyllenhall looking into why sex is fun, begins in many ways with its most fundamental inquiry.

Stephen Hawking’s disembodied voice asks boldly: “Is there a creator”? You may already know his answer: His declaration that there was no God put the astrophysicist in headlines earlier this year.

It warrants a “Curiosity Round Table” (Discovery, 9 p.m.), with David Gregory leading a roundtable of theologians discussing the findings.

And in order to explain how did the world begin and how will it end, there is a second special “Into the Universe with Stephen Hawking” (Discovery, 10 p.m.).

Kaley Cuoco hosts the “Teen Choice 2011” (Fox, 8 p.m.), the annual event in which stars of film, music, TV, sports and fashion get an unweildly life-sized surfboard that serves as the trophy. Performers include One Republic, Selena Gomez and Jason Derulo. Will.i.am serves as DJ. And a special Ultimate Choce Awards will go to Taylor Swift.

“Ty Pennington’s British Adventure” (ABC, 8 p.m.) the star from “Extreme Makeover: Home Edition” travels abroad to save a pool. Perhaps he’ll move a double decker bus.

The two-hour first season finale of “Falling Skies” (TNT,9 p.m.) features an all out war with the aliens. Its preceded by earlier episodes.

On “Dateline” (NBC, 7 p.m) Tom Brokaw reports on the war in Iraq through the fates of three families, a U.S. soldier, an Iraqi family that had been living under Saddam Hussein, and an Iraqi-American.

The cartel makes a big move on “Breaking Bad” (AMC, 10 p.m.).

Like the Nirvana classic of the same name, “Teen Spirit” (ABC Family, 7 p.m.) may well smell. It’s about a mean girl who is forced to promote the fortunes of the school’s most unpopular girl in order to save her own soul.

City folk go to Oklahoma to try and catch catfish with their bare hands. It’s a sport there called noodling. The show calls it “Hillbilly Handfishin’” (Animal Planet, 10 p.m.).

Eric uses his amnesia to his advantage on a new “True Blood” (HBO, 9 p.m.).

Boxer Mike Tyson trades place with another man with the same name, a male nurse in Michigan, who may be tempted to also get a facial tattoo on “Same Name” (CBS, 9 p.m.).

A season finale for “In Plain Sight” (USA, 10 p.m.) features the wedding of Mary’s sister Brandi at a time when Mary herself is about to give birth.

The annual Hall of Fame Game features Chicago vs. St. Louis (NFL, 5 p.m.) in the earliest football game of the season.

After the ouster of Brandon last week, the returning roommates on “Big Brother” (CBS, 8 p.m.) is starting to be vulnerable for the first time. Tonight nominations are revealed from the latest head of household, Kalia.

Sunday Talk

ABC: Sen. Jeff Sessions, Reps. Jason Chaffetz and Steve Rattner, Maryland Gov. Martin O’Malley, Glodia Steinem, U.S. Ambassador to Syria Robert Ford. CBS: White House strategist David Aexlrod, Democratic National Chairman Howard Dean and Sen. Lindsey Graham. NBC: Sens. John Kerry and John McCain, former Fed Chairman Alan Greenspan, Austan Goolsbee, Rachel Mddow and strategist Alex Castellanos. CNN: Steve Forbes, Larry Summers, California Gov. Jerry Brown, former Rep. Tom Davis, former Obama communications director Anita Dunn, retiried vice Admiral Mike McConnell. Fox News: Rep. Paul Ryan, former Minnesota Gov. Tim Pawlenty.