Ben Linus is married to his mother.
If that left you scratching your head, remember that Emily Linus, Ben's mother, was played by Carrie Preston, Michael Emerson's real-life wife. So, if you use a bit of poetic license, then Benjamin Linus is married to his mother. He's also married to waitress Arlene Fowler from True Blood. The two television stars, who met at the Alabama Shakespeare Theatre during a production of Hamlet, both have been regulars on their respective series for a while, and in all likelihood, one of them will continue to be (here's a hint: LOST's series finale is in May).
But if you want to know the couple behind Ben and Arlene, People Magazine is here to help you out. Their March article, "Michael Emerson & Carrie Preston Lost in Love" included a collection of pictures, but sl-LOST has recently unveiled even more. Take a look in the gallery below for what I'm talking about.
By the way -- that piece of artwork in their dining room is so scary, yet so so awesome. If they made copies of that, I bet LOST fans would buy it right up.