It's often said that the key ingredient in a successful partnership is trust. In this 1994 clip from a Dancers for Life benefit performance, Royal Winnipeg Ballet's Evelyn Hart and National Ballet of Canada's Rex Harrington demonstrate trust in action as they perform Jiří Kylián's Nuages. The two stars of Canadian ballet frequently danced together, and the result is a beautiful example of vulnerability and strength. The aquatic, push-pull effect of Kylián's choreography appears seamless, as if they were breathing as one. Watch the sequence at 1:30, as Hart arches over Harrington's arm, then falls forward over her pointe shoes to her knees—it's a cantilevered moment that could easily look manhandled if not perfectly timed. But these two make it as elastic as taffy. Hart dances completely free, because she has no doubt that Harrington will catch her.