David Holliday was a celebrated American actor whose contributions to both Broadway and television have left a lasting impact on the world of entertainment. Most notably recognized as the voice of Virgil Tracy, the heroic pilot of Thunderbird 2 in the iconic puppet series Thunderbirds (1965-66), Holliday's work has become a cornerstone for fans of classic sci-fi and puppet shows. His role in this beloved series has secured a special place in the hearts of collectors, particularly with the release of the Thunderbirds 60th Anniversary Double Bill - Trapped in the Sky / Terror in New York City (2025), which brings a nostalgic celebration of the franchise to physical media. Collectors are drawn to Holliday's performances not only for their nostalgic value but also for their cultural significance. The Thunderbirds series, with its groundbreaking use of marionette puppetry and intricate storytelling, revolutionized children's television and continues to influence creators today. Holliday’s portrayal of Virgil Tracy exemplifies the blend of adventure and heart that defined the series, making his work a sought-after gem in the collections of physical media enthusiasts.