My DH isn't as into it as I am, either. He often teases me that I have an "anxiety attack" after every large purchace (new furniture, cars, kitchen remodelling, etc.) The spending wasn't a problem when we had 2 incomes, but now that I'm a SAHM, we have to make some tradeoffs between day-to-day spending and having money for bigger items like vacations.
In December I subscribed to
www.mvelopes.com and started tracking all our purchases in their envelope system. Every time DH mentions a big item he'd like to purchase (laptop, vacation, etc.), I add a new envelope for it (for instance, "Goal: laptop"), and when possible add a monthly contribution to it to the spending plan. He started teasing that me that he was getting beaten up by Mvelopes (because I would say we can't buy a new laptop because there's not enough money in the envelope yet). I really found that I was juggling all the balances without him really being involved.
So I asked him to sit down with me twice a month (at the mid-point and the end) and see how we're doing. So far we've only had one mid-month review, but I felt it went really well. I print out the current envelope balances and the monthly spending plan. At mid-month I ask for his input on the envelopes that have gone red (overspent) -- he helps decide which envelope should we transfer from (and cut back on for the rest of the month). At the end of the month, I'll ask him to where he'd like to sweep any unspent funds (for instance that laptop envelope). We each have a "free spend" envelope as well, and I always ask before I commit a purchase to his envelope. We don't go over each envelope individually, only the ones that need action. Like I said, we just started this, so I'm hoping it will help us communicate better about finances.