Sulu

Sulu was the astroscientist and helmsman aboard the U.S.S. Enterprise. Assigned as a physicist at first, Sulu was transferred  to duties as a Tactical  officer. He was a renownced expert on various forms of arms, in particular antique projectal weapons, and also skilledat swordplay, fensing and Judo. He was also a experienced and steady pilot. A dedicated botanist, Sulu tended a collection of flora samples from his travels in the Enterprise's garden.
From Trek Trivia

Uhura

Lieutenant Uhuras name means "freedom" in Swahili.
Communication officer Uhura, Nichelle Nichols,was one of the first black women to play a non-menial role in a TV series and has served as an inspiration for trailblazing actresses. According to legend, Nichols was leaning toward leaving the show, when Dr. Martin Luther King Jr. convinced her to stay. Although a kiss between Kirk and Uhura in 1968 is sometimes considered the first interracial kiss on television in the United States, the first interracial kiss was on I Spy in 1966. Nichols also became a spokesperson for NASA during their first launch of the space shuttle.

From Trek Trivia Calender