There actually is unique dialogue for your spouse when you take him/her to the movies. It's pretty good for friendship points too.I have opened that location and as yet not taken advantage of it. And I even have the necessary prerequisite to do so at any time.
But it's all the way over there. And like I'm ever going to remember or >gasp< plan to do that.
This is a great thing that a spouse could remind you to do once in a while, a married dialog tidbit which could be added in 1.5 maybe. Because I need those reminders.