Moving over to the films I don't know if I need to say this again, but better to be safe than sorry. Her documentaries are some of the most gorgeous pieces of art I have ever seen. The cinematography, editing, sound, et cetera creates a breathtaking whole. I'm posting the actual videos here so you can see the films in parts or entirely.
Triumph des Willens. You should definitely see the entirety of this film as it is such an important piece for western history, but at least the first 15 minutes
Olympia, Part 1 - Fest der Völker. As I said in class, the introductions are always the most extraordinary. So if you are only watching that I would suggest watching till 21:30 on the video posted below. If analyzing this ideologically, we can see blurring of genders, but also a representation of the olympics moving from a less refined culture of darker people to this epitome of civilization and whiteness that is the olympics in Berlin. Look at the runners with the torch all the way up to the fire is lit (which is at the time stated above). This is also the film where Jesse Owens appears.
Olympia, Part 2 - Fest der Schönheit. This is where we find the diving sequence. You can see it in its entirety starting at 1:15:30 with a tiny swimming break in the middle. Look at that camera go in the beginning of that sequence. The scholarly article that Jans has mentioned several times, by Susan Sontag can be found here. See if you agree with the assertions made.
In conclusion: The camera work here in all three of these films is just fantastic, and will capture you if you take the time to screen this (I know I just posted 5.5 hours of video). If you want a shorter piece to watch that is just as breathtaking and gorgeous, you can watch Impressionen unter Wasser. It is in total 45 minutes, but youtube has wonderful 10 min pieces of it, like this one (The camera man is her second husband, and the person with the light is Riefenstahl the senior citizen):