This is certainly a familiar concept to me, and my family operates on this scheme in a more formalized way. We use the Japanese system (being my wife is Japanese) which works like this:
I work and earn money. All income goes into the same account. She manages all the money. Each of us gets a monthly "allowance" of around $100 to spend on whatever we want, and all other purchases are strictly regulated by her, with only necessary "family" items getting bought--you want something else, you pay for it out of your allowance. Everything left over goes into intrest-bearing savings of some sort.
Unlike some of the partners mentioned here, I'm certainly the unfrugal one; I'm generally cheap, but I do like the expensive toys. As for my wife, her hobby is saving money, so she spends nothing on jewlrey or non-essential (shampoo and soap) grooming, and almost nothing on clothes or the like. She doesn't even generally end up spending her allowance, because she prefers the wad of cash to physical objects most of the time.
I get less toys (in my case, it took about two months to convince her that the upgrade from a DP533 to a G5 provided enough family benefit to be worth the expense), but this works out pretty well--we have zero debt, and manage to save a few thousand a year, which isn't too bad on my salary.
Plus, I think I've managed to convince her that the $1300 for a new 20" display from Apple is worth it if I kick in a few hundred of my own money.