Those Who Trespass: A Novel of Television and Murder (ISBN 0-7679-1381-7) is a 1998 novel by US television personality Bill O'Reilly. The story focuses on the revenge a television journalist exacts on network staff after disputes very similar to O'Reilly's real tensions with CBS. The revenge takes the form of a series of graphically described murders.

Tek Jansen is a fictional character featured on The Colbert Report and in a comic book series published by Oni Press. Jansen originated as a recurring joke in the form of a supposed self-published science fiction novel on the Report, reportedly as a parody of Bill O'Reilly's 1998 novel, Those Who Trespass. The character later appeared on the show in a series of animated shorts entitled Stephen Colbert Presents Stephen Colbert's Alpha Squad 7: A Tek Jansen Adventure, with Jansen voiced by Stephen Colbert, and in 2007 became the protagonist of a five-part comic series.