Lambert joined the crew of HBO Western drama Deadwood as a writer for the third season in 2006. The series was created by David Milch and focuses on the growth of a settlement in the American West. Lambert wrote the episode "A Rich Find". Lambert and the writing staff were nominated for a Writers Guild of America Award for Outstanding Drama Series at the February 2007 ceremony.
Lambert became an associate producer and staff writer for HBO surf noir John From Cincinnati. The series was created by Milch and Kem Nunn and focuses on the arrival of a messiah-like figure in a surfing community. Lambert wrote the episode "His Visit: Day Five". The series was canceled after completing its first season.
|2007||John From Cincinnati||Associate producer and staff writer||Season 1|
|2007||John From Cincinnati||1||"His Visit: Day Five"||6|
|2007||Deadwood||3||"A Rich Find"||6|