Here are some videos that I feel are captivating for the sport:

Ironman World Championship Compilation:

The Rick and Dick Hoyt Story:
"When I am racing, I feel as though my disability is gone..."

Sian Welch and Wendy Ingraham, "The 100 foot Crawl":
"Their bodies were obliterated, but their spirit held firm..."

The last 10 minutes of the Ironman Coeur d'Alene: