And she also pirouettes beautifully like this:

When she stays on the beam, her flips are high, her legs are straight, her toes are pointed -- all stuff judges are looking for when scoring routines.

And smiling. When she won trials, she celebrated by doing the Dougie, via Aaron Meier:

Weakness: In boy sports, when an athlete or team has amazing talent but can't put it together in a competition, he's called a "choke artist." In gymnastics, the term is "headcase." Last year, Douglas had a tendency to headcase on beam. Now, she still wobbles a bit up there from time to time, but has shown huge improvement in her ability to not fall off. Still, in training she looks like this, a full-twisting back flip, from Stanastia:

But in competition she often wobbles like this, from Gymnastics GIFs:

The Favorite: Jordyn Wieber. The first thing you notice about Wieber is that she's straight-up jacked. (Her coach John Geddert says that even as a little kid, Wieber was incredibly strong.) You can see that in her powerful tumbling, which helped her win the national title twice and the world championships last year. She's not a natural on bars, and relies on her crazy strength to make her routine worth more points. Wieber, 16, has won every all-around competition (that's when you add up all four events) she's competed in since 2008 -- except Sunday night. (Photo via Twitter.)

What she's good at: Tumbling on floor. Here's a double-twisting double back flip, via the tumblr starkofwinterfell:

She's good at vault too. This is called an Amanar, the end part is one-and-a-half flips plus two-and-a-half twists:

Weiber does several of the hardest skills in a row on beam:

Weakness: Bars. Wieber depends on her strength, instead of a natural swinging ability, to get through her bar routine. If she makes a mistake, it can easily lead to another.

Most Dependable: Aly Raisman. Raisman, 18, is also super-strong, and is known for never falling in competition. (Photo via Twitter.)

What she's good at: Floor. Raisman is one of the most powerful tumblers in the world. She dances to Hava Nagila, and her first pass in her floor routine looks like this, via Gymnastics GIFs:

In gymnastics, that's a one-and-a-half through to a double Arabian punch front layout. In regular human words, that's a roundoff, one-and-a-half twisting flip into another roundoff, backhand spring, half-twisting double flip, into another flip. Here's another, via monigymnastics:

Weakness: Raisman isn't known for being graceful. She tends to get deductions for flexed feet on bars and beam. But she's getting better at the dance thing:

Most Elegant: Kyla Ross. The Olympics will be Ross's first major international competition as a senior, because she only turns 16 this year. (Photo via Associated Press.)

What she's good at: She's known for being elegant -- look at her flexibility here, via monigymnastics: