Almost entirely online. The car payment, insurance and student loan is automatically withdrawn (we saved on interest by doing that), then all other bills are paid online. I can even "write" checks online to anyone I want.
My bill-pay is free with direct deposit, which is how DH and I are both paid. I love it because I can specify the day to pay it - usually the day before it's due - and the money isn't touched until then.
Oh, and the kid that mows my lawn doesn't accept online payments, so - *sigh* - he's the only person I write a check to.