While WatchRoster’s top entry for William B. Davis is the 2009 film *Damage*, most collectors universally recognize him as the iconic Cigarette Smoking Man from *The X-Files*. This seminal sci-fi series, which ran from 1993 to 2002 and saw later revivals, is an essential part of any home video collection. The show's numerous DVD and Blu-ray box sets, packed with special features and commentary, are highly sought after by fans eager to revisit Davis's cryptic portrayal. His character's mysterious presence and philosophical pronouncements became synonymous with the show's dark, conspiratorial tone, cementing his place in pop culture history. Beyond his legendary *X-Files* role, Davis’s extensive career offers other collectible gems. His appearances in genre favorites like *Stargate SG-1* and *Smallville* showcase his versatility within the sci-fi landscape, making those DVD and Blu-ray releases appealing to collectors who appreciate a familiar face in a new universe. Even his voice work, such as in the video game *The Thing*, adds a unique layer to his resume. For physical media enthusiasts, collecting Davis’s work is about more than just the films themselves; it’s about owning a piece of television history defined by one of its most enigmatic and enduring figures.