IMDb.com, Earth's biggest movie database, has released their top 25 stars for 2007. These STARmeter™ rankings were not based upon critical assessments or box-office performance, but the actual search behavior of over 42 million users of IMDb.com.
*NOTE: These are screen shots from the site, so the links don't work. Check out the source if you want links.
ETA: Posted I see (I checked, but google failed me) but it seems by the comments that a lot of people haven't seen it (and this one's got pictures!) so I'm going to leave it. Mods can delete it if they feel necessary though.