IESB.com has posted an overview for the main characters of Star Trek. Winona is mentioned, of course, when talking about Spock. Quinto, also, talk about Winona:

When the U.S.S. Enterprise leaves the dock for the first time headed for the stars, one officer aboard stands worlds apart from the rest: the man known simply as Spock. Spock was born on the planet Vulcan, a world where emotions became so out-of-control that they were done away with forever in favor of pure logic. However, Spock’s mother is human, leaving Spock to grow up fighting an internal battle between the rational and the instinctual. As Spock’s father, Sarek, tells him: “You are fully capable of choosing your own destiny . . . this is something only you can decide.” (…)

Quinto also enjoyed working with two other classic characters who play a pivotal role in “Star Trek”: Spock’s bi-galactic parents, his earthling mother Amanda Grayson and his Vulcan ambassador father Sarek, played respectively by two-time Academy Award® nominee Winona Ryder (“The Age of Innocence,” “Little Women”) and the British actor Ben Cross, renowned for his role in the Oscar®-winning “Chariots of Fire.” Together, the two created a starkly contrasting yet richly sophisticated couple. “Winona brought a real tenderness to the role and she really highlights the juxtaposition between her heartfelt way of being and Sarek’s logic,” Quinto says. “Ben was such a great energy to be around. He has such certitude and a groundedness as Sarek that I was able to connect with him right away.”

To read the complete overview, go to IESB.com