My husband and I have all of our funds as one (in the sense that its not his money vs. my money), however our paychecks go into seperate accounts.
My check goes into savings and then pays out all regular unchanging bills each month (i.e. our mortgage, rental mortgage, car payments, kids school tuition, insurance, etc)...All bills and transfers for this account are automatic. I go in once every so often and make sure all is working. whats left of my check builds up in our savings account.
My husband's check goes into checking and that is what we use to "live" off. This pays all the variable bills (phone, electricity, food, travel, clothes, gas, etc). He pays all the bills in this account and I do 99.99% of the shopping out of this account. He pays all the bills online through our bank each week, he checks the mail on Thursdays and pays bills on friday. So there isn't much room for forgetting. Nothing is automatically withdrawn (except gym membership). We only write 1 check per month to daycare.
I occassionally forget to pay a bill that we only pay once a year (home insurances, or DMV) and yes it makes me feel completely incompetent because I don't have many to pay, so I shouldn't forget, right?
I would suggest that you get an account with US BANK and pay all your bills online. No stamps, no forgetting that way.