It's The Diesel against The Bieb on 'Shaq Vs.' (Tue., 9PM ET on ABC). Justin Bieber has collected his team of teen boys, and agreed to go up against Shaquille O'Neal and his children on the family's basketball court.

"If you beat me, you take my jet anywhere in the world you wanta go," says O'Neal. Deal. We won't spoil who wins. But we gotta say ... Bieber is actually good.

Later, the pro basketball player/recording artist joins The Bieb at one of his concerts, showing off his other skillz during 'Baby'.

On 'Shaq Vs.' (Tue., 9PM ET on ABC), Shaquille O'Neal's latest proposition was as follows: a five-hole game of golf against Charles Barkley. The loser would have to jog down a beach in a pink speedo.

O'Neal added, "If I lose, next time you're on TNT, I'll kiss [NBA analyst] Kenny Smith in the corner of the mouth." Deal? Barkley couldn't turn that down.

There's some debate about who the current "Fastest Man Alive" is. Some people say it's Usain Bolt; some people say it's Tyson Gay. ... But at any rate, Tyson Gay is no worse than the second fastest man on the face of the Earth. And now, Shaquille O'Neal must beat him in a race.

'Shaq Vs.' (Tue., 9PM ET on ABC) is a show where O'Neal takes on the top athletes in he world, challenging them in their own sports. Tonight's match-up: Shaq versus Tyson. The pair run a 60 meter race; except that Shaq gets a 30 meter head start. Hey! That isn't exactly cool! So O'Neal only has to run half as far as Gay?

Will the world's (possibly) fastest man win, even if he has to run twice as far as Shaq? Let's watch and see. And no matter who wins, is this even a fair contest for either athlete?

Is Shaquille O'Neal the greatest athlete when it comes to boxing? His 7-foot-1, 335-pound frame may have helped intimidate his foe -- 5-foot-9, 150-pound "Sugar" Shane Mosley -- on 'Shaq Vs.' (Tue., 9PM ET on ABC). Or maybe not.

They both got in some decent punches, and at one point, Shaq briefly stood on his knees to swing from a closer angle. But Mosley was clearly better at maneuvering. After a surprisingly close five-round battle, the judges' scoring was tight: Who did they determine was the better boxer? Check out the clip.

It's Shaquille O'Neal versus Dale Earnhardt, Jr. Wait! That's not fair! Shaq is much taller. ... Oh; oh, all right. They're not competing in basketball? That's okay then.

On 'Shaq Vs.' (Tue., 9PM ET on ABC), Shaquille takes on race car driver Dale Earnhardt. Shaq is over seven feet tall, and Dale is only six feet. But Shaq's normal height advantage won't help him here. During the competition, the pair of athletes are racing cars. And Shaq is in fact at a disadvantage, since his height requires a specially-made car with a lift-off top just so he can get into the thing.

So let's get to the results from the actual challenge. Can Shaq manage to outrace Dale? They have five laps to figure this out.

• At 8, NBC has the two-hour season premiere of The Biggest Loser, then a new Jay Leno Show.
  
• FOX has the two-hour season finale of More To Love.
• The CW has a new 90210 at 8, then a new Melrose Place.
  
• At 9, CBS has the two-hour season finale of Big Brother.
• ABC has a new Shaq Vs. at 9, followed by Barbara Walters: Patrick Swayze.
• Syfy has a new Warehouse 13 at 9, then a new ECW.
• History Channel has a new episode of The Universe at 9.
• BBC America has a new Dragon's Den at 9.
• Also at 9: ESPN has a new World Series of Poker.
• At 10, A&E has a new episode of The Cleaner.
• FX has a new Sons of Anarchy at 10.
• Food Network has a new Chopped at 10.
• There's a new Flipping Out on Bravo at 10.
• Travel Channel has a new Andrew Zimmern's Bizarre World at 10.
• HBO has a new Real Sports with Bryant Gumbel at 10.

Check your local TV listings for more.

After the jump, the late night talk shows.