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His first series, “Jultagi,” used the Korean tightrope walker as a metaphor for the immigrant experience.

Their buccaneering batting is made all the more thrilling by the risk of it going spectacularly wrong, like watching a tightrope walker tiptoe between skyscrapers.

In one video, a tightrope walker suspended between two mountains edges toward the viewer, creating an unsettling urge to look down at an intimidating chasm below.

He was a one-man circus: A tightrope walker and a clown.

He appeared on Jon Stewart’s “The Daily Show,” where he ate Twinkies, made jokes about Mr. bin Laden and called himself a “tightrope walker.”