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Virtually unknown to American or European audiences, Jacobsen had recurring roles in two Australian TV shows, headLand and Pizza. In the genre, she also had a brief appearance in the last season of SCIFI Channel's Farscape. Recently, she was cast as Maya in ABC's remake of Life on Mars, but was replaced by Lisa Bonet when nearly all of the parts were re-cast following the first pilot. She portrays Yoshi in a yet untitled sci-fi/horror movie referred to as "Untitled Gehenna Project".
Jacobsen had a semi-regular role for most of the second season of Terminator: The Sarah Connor Chronicles as the character Commander Jesse Flores, a Resistance fighter from the future. Coincidentally, this character also served as executive officer, but on the nuclear submarine USS Jimmy Carter.