I love findagrave.com., too but a lot of times no one has entered any information on the person you're looking for. I am currently in the process of adding some of my relatives and my husband's relatives. It is a wonderful way to create a memorial for a loved one.
I really like using usgenweb.com. If you are lucky.......the county areas are full of information including cemetery listings and some biographies as well. I have finally found out where some of my relatives were buried.
My absolute favorite site is www.linkpendium.com This site is maintained by the founders of Roots Web. It contains a collection of links for every county in the USA and is now branching out to Great Britain. There is also a huge collection of links to surname sites. GenWeb, Geneaology Trails and others are listed in the "projects" section. In the "cemeteries" section, both Find A Grave and Interment Net are listed along with any local sources. There is a direct link to the relevant parts of the Family History Library Catalog. And that just skims the surface. I've found links to collections of data that I would never have stumbled across otherwise.
Many good sites have been mentioned that will keep many of us busy for quite some time. I also like Find a Grave, www.findagrave.com, and have met several distant relatives and contacts through this site. Best of all, I have had good luck finding people to take photos of gravestones thousands of miles away!
For those researching in Washington state, you can't over look the following FREE site: Washington State Digital Archives at http://www.digitalarchives.wa.gov/. A simple surname search will bring up marriage, death, military, land and census records all together on one or more pages and many images can be printed off after downloading a plug-in.
Also, Ask a Librarian, http://www.secstate.wa.gov/library/ask_form.aspx, at the Washington State Library will "answer your questions about Washington state government, history, culture, the federal government, and genealogy." They have an email form that you fill out and send along with pertinent information. It may take a few weeks but is well worth the wait and it is FREE. They are only able to do 1 hour of research per question and would like you to submit 1 name at a time except for obituaries for which you can submit up to 3 names per request.
I LOVE the Washington State Digital Archives, and use it all the time to research my hubby's ancestors. If any of you are interested, we have Jerry Handfield, the Washington State Archivist and Lee Pierce, the Assistant Archivist at the Eastern Regional State Archives/State Digital Archives speaking at the Washington State Genealogical Society's state conference here in Spokane on September 11 - 13. You do not need to be a member of WSGS to attend. For more details, go here.
Oh, yeah, we'll also have Megan Smolenyak Smolenyak giving four presentations...plus Bruce Buzbee talking about RootsMagic...plus many more fantastic presenters!