Kaj-Erik Erikson is a Canadian actor, probably best known for his recurring guest spot as Danny on the science fiction thriller program "The 4400," the younger brother of "returnee" Shawn Farrell, who is a main character on the show. Although he was on for only 16 episodes, it was another solid part for an actor who has been working since he was a child and slowly building up a resume of strong roles. He began in the late 1980s, working in several small, independent feature films, like the 1989 science fiction movie "Quarantine," and taking bit parts in television programs, such as "MacGyver" and "Neon Rider." He also landed a major part as the teenage son of Michael Chiklis's character in the hard-hitting cop drama "The Commish," which was filmed in Vancouver, Erikson's home town. He also became a regular on the Showtime satire "Beggars and Choosers," playing yet another teenage son, this time of a television network executive. After relocating to the United States for work, he eventually landed a major role on the ABC high school-set drama "Boston Public." Although most of his work has been for the small screen, he did land a small role in the 2007 Al Pacino film "88 Minutes."