Portable DiskDigger provides free file recovery for Windows
Like Recuva, Disk Digger is dead simple to use, and does a good job at recovering the deleted files most users really care about - photos, music, videos, and documents. The preview pane supports most image types and some documents, and you can choose to recover a portion of files DiskDigger finds. Scanning speed and restoration success was on par with Recuva in my testing.
On Vista and Windows 7 make sure you run DiskDigger as an Administrator, otherwise you might run into problems. Though I received an error message after launching it on Vista Ultimate x64, it ran without further problems after clicking continue and did a good job locating and restoring lost files.
In case you have issues getting the file from the author's page, it's mirrored at Snapfiles as well.