The Challenge... A Tribute to Modern Art is a 1974 American documentary film directed by Herbert Kline. The film shows footage of great modern artists in their studios creating and commenting on their work, with narration and commentary by Orson Welles. It was nominated for an Academy Award for Best Documentary Feature.

Among Alexander Calder's creations were miniature spring-loaded circus figures, made of wire. In this short film, Calder (1989-1976) talks about and demonstrates these toy-like creations. We see them spin, hop, roll, and leap. It's pure whimsy, wit, and glee.