[soapbox] If you have assets, or if you have children please get some kind of testamentary device. I just got off the phone with a friend who is neck deep in a case where a single mother (widow) died intestate and now the two sides of the family are fighting over every single aspect of the estate. There are two young kids and a sizeable amount of assets and yet she didn't have a will and now courts will decide how her assets are divided and who will get custody of the kids.
So please don't let this happen to you. If you're worried about the costs in many states do it yourself wills are perfectly valid.[/soapbox]