Casper served as the editor for The Last Dalai Lama?, a feature documentary directed by Mickey Lemle, which was released theatrically across North America in 2017. He created, produced, and directed the award-winning feature documentary Signs of the Time, which explores the connection between baseball hand signals and deaf culture. Narrated by Richard Dreyfuss, this film was featured in The New York Times and aired internationally, earning the NY Emmy® Award for Outstanding Documentary.

His accolades also include NY Emmy® awards for co-producing Turn The Page (2019) and directing Don’t Define Me (2020). He co-produced and edited Women and the Vote, directed by Linda Moroney, which won the 2022 NY Emmy® in Documentary Topical.

Most recently, he directed Appalachia Heart, a film following visual artist Charmaine Wheatley as she paints portraits of individuals affected by the opioid crisis in rural Eastern Kentucky. The film premiered nationwide on public television and received the 2024 NY Emmy® for Best Human Interest Program.

In addition to his filmmaking, Don is currently working on an MFA degree in photography using alternative motion picture capture and display processes that reflect on legacy, impermanence and the transition of how society consumes media.