The Linköping Science Fiction and Fantasy Archive is a large compendium of book reviews, author overviews, bibliographies, artwork, and God knows what-all else. We're willing to ignore and forgive the fact that they include movies. Given the volume of SF&F that's been written, I doubt that it's exhaustive, but it makes for a good few hours of aimless browsing now and then. For those who have better things to spend their money on than obscure out-of-print paperbacks, the bibiographies are an occasion of sin. Mmm, Jack Vance . . .

The Linköping Science Fiction and Fantasy Archive is located at
http://www2.lysator.liu.se/sf_archive/sf_main.html

There's a handy author list here:
http://www2.lysator.liu.se/sf_archive/sf-texts/authors/