What are some ways to improve communication in your commited relationship?

Well, it kind of depends on what's lacking in communication. Is one partner not listening to the other? Is one partner not talking to the other the way they should? To me, the key is trying to find a balance between listening and talking. Not thinking ahead to what you're going to say when they get done talking. Really listening and hearing what they say, thinking about what they've said and then forming your response. When something upsets or angers you, trying to calm down and think up a clear, rational way of talking to them about it, so that it can be resolved instead of just argued about.

Not sure if I was much help, but I tried. :)