I sprung it on my wife years after we were married. I hadn't played D&D since college, but when 4e came out, the stars aligned and before I knew it, I had 5 guys showing up at my house every other Wednesday.
She's great. She puts the kids to bed, enjoys the gang, and even bakes cakes for birthdays. She might have a little interest in playing, but right now that is eclipsed by going to school online and how late we tend to play(2am). Still, the group is closed, but she has a standing invitation that I hope she will take up once she finishes up college.
And she, and my daughters are enablers. I got a stack of great stuff for Christmas and the other day they were out and my little one, who's 3, says she to my wife, she wants to buy me a bunch of D&D stuff for Valentine's day. The older one wanted to play with it.