Jolene is one of those rare actors that walks into a room and you know is a star. Her magnetism, along with the fact that this incredibly gorgeous Southern California native can truly act is giving her a chance that very few actors have - make a living doing what they love.
Sub-Commander T'Pol
Sub Commander T'Pol of Star Trek Enterprise...the austere yet sensual Vulcan Science Officer assigned to the Enterprise. Feline in her movements and diplomatic with her words, T'Pol is sure to be one of the more controversial characters of the Star Trek series.
The Vulcans insisted that T'Pol oversee Enterprise's voyages and refused to supply starcharts unless this demand was met. This is not a position for which T'Pol volunteered. Her skill as a science officer is unquestioned, but working alongside primitive and irrational humans is an ongoing lesson in Vulcan patience. T'Pol and Archer often disagree. Eventually, though, they will learn mutual respect.
From the Enterprise Bible
Sub-Commander T'Pol is as thrilled with her post on the Enterprise as her human crewmembers. Viewing it as a hardship post, she'll actually begin to envy humans and become fascinated with them, sampling food, observing behavior, and even studying mating rituals.
She respects Captain Archer in him she recognizes humanity's ability to become more than the base instincts exhibited by Charlie Tucker. T'Pol will become especially close with Doctor Phlox, whom she'll confide in as a fellow outsider and student of humanity. The good Doctor will even provide her with a "nasal numbing agent" to mask the odor of humans when they're excited. T'Pol is the oldest on board.
Although Archer feels that T'Pol represents the worst arrogance of the Vulcans, he'll come to rely on her interstellar experience and even appreciate her wry humor. The two characters will be obstacles to one another but develop a unique human/alien relationship that is rather unorthodox at this point in time.
More importantly, Archer, T'Pol, and Tucker form the triumverate of the series, the three most important decision-makers on board.