Quite a bit.

Keep in mind that when your company name and domain name carry the primary keyword phrase, you've got mojo out of the gate. Think about all that incoming anchor text that uses the company name. ;)

I was looking through my domain portolio earlier and see one I bought or a business I wanted to start a year ago.

I did a search on that target product and the 2 keyword search phrase is the same as my 2 keyword domain.

woohoo!

Lets make some money huh.

I did a search on that target product and the 2 keyword search phrase is the same as my 2 keyword domain.

Please do keep in mind that it is a very "small" part of the overall equation. The competitiveness of that term will determine the outcome of your success. ;)

While keywords in a domain may have some influence, it is not the smoking gun as they say. But I can say from personal experience that it at least contributes to the ammo used for the smoking gun. :)