(written from a Production point of view)
Todd Wieland (born 2 October 1960; age 56) is an actor who appeared as an Enterprise NX-01 crewman throughout the first two seasons of Star Trek: Enterprise. As a background actor he received no credit for his appearances. His uniform was later sold off on the It's A Wrap! sale and auction on eBay. 
Born as Todd Joseph Wieland in Harbor City, California he is member of The Hollywood Division, a group of actors with a military and or police background who portrayed cops, soldiers, and officers in several film and television productions. Wieland also worked as military and technical adviser on several film and television productions.
Among his appearances are the action film Bad Guys (2000, with Michael Bailey Smith), the war drama U-571 (2000, with Dave Power), the comedy sequel The Flintstones in Viva Rock Vegas (2000, with Joan Collins, David Jean Thomas, John Cho, Kevin Grevioux, Steve Schirripa, Ted Rooney, and Scott L. Schwartz), the comedy O Brother, Where Art Thou? (2000, with Brian Reddy, Frank Collison, Stephen Root, and Musetta Vander), the thriller Desire and Deception (2001), the crime thriller Made (2001, with Famke Janssen), the fantasy thriller Megiddo: The Omega Code 2 (2001, with Guy Siner, John DeMita, Jim Metzler, Greg Ellis, and Andrei Sterling), the drama Wicked Temptations (2002), the thriller Erotic Obsessions (2002), and the drama Exposed (2002).
Wieland also appeared in the television series America's Most Wanted, Arrest & Trial (episode "West Hills Bandit" in 2000), and Family Law (starring Christopher McDonald, Salli Richardson-Whitfield, and Julie Warner).