Scientists behind the Species 2000 project aim to catalog some 1.75 million species on the planet. According to this news item, the team recently hit a milestone with the addition to the database of the millionth species.
As the article points out, thousands of new species are discovered each year. On behalf of the diligent crew at Species 2000, GTO asks that anyone who stumbles across a new species in the next few years keep it to themselves until the catalog is finished. Really. These people deserve to be done at some point, don't they?