Lena Horne and Lennie Hayton

Lena Mary Calhoun Horne, a singer, actress, dancer, and civil rights activist, married Lennie Hayton, a musical conductor and arranger, in December 1947. Later, the two separated, but did not divorce.

Lena's Wiki
Lena's IMDb
Lennie's Wiki
Lennie's IMDb

Link to Ebony, May 1980 at Google Books (note the article starts on page 38, but the link is to page 158)
Lena responding to a question about the possibility of marrying another white man.

LENA: You must know that in the beginning I didn't marry Lennie because I was in love with him.[...]
EBONY: In other words, to put it quite bluntly, you used him to further your career.
LENA: That's right. And I learned to love him very much.

Engaged: Zoe Saldana and Keith Britton

Photo credit, Kevin Sullivan, The Orange County Register

Zoe Yadira Zaldana Nazario is engaged to Keith Allen Britton. An actress, Zoe was born to a Dominican father and a Puerto Rican mother. An actor and CEO for My Fashion Database, Keith has been dating Zoe since 2005.

Zoe's Wiki
Zoe's IMDb
Keith's IMDb

When I go to the D.R., the press in Santo Domingo always asks, "¿Qué te consideras, dominicana o americana?" (What do you consider yourself, Dominican or American?) I don't understand it, and it's the same people asking the same question. So I say, time and time again, "Yo soy una mujer negra." ("I am a black woman.") [They go,] "Oh, no, tú eres trigueñita." ("Oh no, you are 'dark skinned'") I'm like, "No! Let's get it straight, yo soy una mujer negra." ("I am a black woman.") IMDb 

Kelley and Mark Kenney

Dr. Kelley Kenney and Mark Kenney are married with two girls, Olivia and Elena. They are professors and counselors on the topic of multiracial and multicultural families. They have held workshops as counselors and have conducted research that has been published in books and magazines. They are currently on the Advisory Board for Loving Day.

Pictures here

Lorraine Hansberry and Robert Nemiroff

Lorraine Hansberry, a playwright and author, married Robert Nemiroff, a Broadway producer, in 1953. Lorraine is best known for her play A Raisin in the Sun. The two divorced in 1962, Lorraine passed away in 1965 from cancer, and Robert devoted much of his life to making her works known. Robert also passed away from cancer in 1991.

Lorraine's Wiki
Robert's Obituary

Trisha Goddard and Peter Gianfrancesco

Patricia Goddard, a British actress and TV personality, married Peter Gianfrancesco, an Australian psycotherapist, in 1998. Trisha has two daughters, Billie and Madi, from a previous relationship.

Trisha's Wiki
Article One - relationships
Article Two - home

My Comments: What a life! The first article has info about her autobiography and a pic from her wedding to Peter. The second article has a pic of the family that is more recent.

TV and Movies: Hoban and Zoe Washburne

Zoe Alleyne (played by Gina Torres), loyal follower and second in command to Malcolm Reynolds, serves on his vessel after the Unification War on his spaceship Serenity. Hoban (played by Alan Tudyk), a talented pilot who goes by the nickname Wash, gets hired by Mal and falls in love with Zoe. The two are a wonderful team.

Firefly, a TV series, ends in Serenity, a movie, both created, written and/or directed by Joss Whedon. Both are available on DVD. There is also a comic book continuation.

Firefly Wiki
Firefly IMDb
Serenity Wiki
Serenity IMDb

Keisha Bolton and Wilco Van Kleef

Keisha Bolton and Wilco Van Kleef are the worlds tallest married couple according to the Guiness Book of World Records(2009, see update). Keisha met Wilco searching for a dance partner through the UK Tall Person's Club, and they married in 2001.

An article about the couple here
Wilco's Wiki

My Comments: There were some reports that another couple was taller than the Van Kleef's but I can't find that info.
Update: A couple in California, the Hallquists, have now been named the world's tallest couple by Guiness.