American Ninja Warrior, the spin-off of the Japanese television series Sasuke, is undoubtedly an extremely challenging sports entertainment competition. It is one of the few sports in which men and women compete on the same obstacle course, giving everyone an equal shot at proving themselves. With thousands of competitors, it can be tricky to remember them all, and that's why we're here to make sure you don't miss out on any of the highlights. Here are the most memorable moments in American Ninja Warrior history.

And, finally, that third retry was the charm. "It’s about not giving up. I was devastated when I fell in the first attempt. And even more devastated year after year as I continued to audition and fill out gigantic applications and get rejected," said Pierstorff, who calls himself the Ninja Poet. "But out of habit and hope, I just continued to try, and lo and behold, I got the call."

Could Amell prove to have superhero stamina in real life? Fans have been watching his workout routine for years and believe that the actor can tackle the obstacles with ease. At practically every Q&A Amell attends, he gets asked the question: when are you going to participate in American Ninja Warrior?

On campus in Nashville -- Meagan Martin might be one of the most skilled athletes to ever enjoy a career at Vanderbilt. As a Commodore pole vaulter from 2009-12, Martin set a then-program record (3.95 meters) at the 2012 SEC Indoor Championships and went on to become a professional rock climber in her post-Vanderbilt life. But Martin also gained national recognition as a contestant on NBC/Esquire Network's American Ninja Warrior, where she became just the third female competitor to complete the show's qualifying course. Martin will re-join ANW during its spring season. This week Martin took time out of her busy life to catch up with the Commodore Insider Podcast.

American Ninja Warrior co-host, Matt Iseman...sure he may have gone to medical school to become a doctor...but he chose to become a stand up comedian instead...and it seems to be working out for him! You can see him on the season finale of Celebrity Apprentice AND on Feb 20th , he's back on NBC for the American Ninja Warrior: All Star Special!!

Jackie and the Junior Ninja team are excited for these expansion opportunities where they will bring classes, competitions, camps, birthday parties, and open play to these communities. They also have made lasting connections with many American Ninja Warrior competitors and will be partnering with many to create these new gyms, including Ethan Swanson. Swanson, one of seventeen Pro Ninjas to advance onto Stage 2 in season 8 of American Ninja Warrior, is the Manager of Course Operations at the JNW Chicago location.

His work in construction adds to his training regimen and has provided skills that have proven handy as he develops his own unique training facility at home. Picture this: Two 10-foot-tall vertical boards, connected at the top by bracing and notched at even intervals. Shimizu, like other American Ninja Warrior competitors, places a bar across the lowest notches like a pullup bar, but with each pullup, he lifts the bar midflight to the next pair of notches, climbing toward the sky without ever letting go of the bar or touching the ground.