The mSecure password manager that has Sync with a Mac and Windows Desktop App (wireless of course) is coming to Android. Long available on iPhones, this is one best, because it can handle a lot of different types of passwords, credit cards, bank accounts, etc.
There is a free backup program for mac and windows.
There is also a paid Sync program, which lets you edit your stuff on the computer and sync between the phone. This is sweet when you have a couple different devices to keep in sync, like that old iphone you just use as an iPod Touch since you got your Android.