If you've ever needed to know the best place to get certain kinds of treatment or you want to find success rates or procedure costs, try Hospital Compare, from the US Department of Health and Human Services. It's also used by Medicare. (WARNING: This site does not seem to work in Firefox. You'll probably need Internet Explorer to see it.)
You can search by hospital name or location, so you can see information on one particular place or perhaps see all the hospitals within a certain ZIP code or town. Some states, like Texas, are broken down by region, and US territories are included. You can compare up to three hospitals at once.
The homepage has lots of explanatory information as well as a link on how to use the site (it opens a new window). When you're ready to search, click the "Find and Compare Hospitals" button on the homepage. There's quite a bit of useful information here, and it's nice to have it all in one place.