Yesterday I unfortunately tried to add a few PDF books to my iPad2 and in the process iTunes managed to trash all my previously-downloaded books (and Music and Photos!).
As with the Mac, I don't think that the actual data are erased but rather a flag is set that indicates a trashed file. Therefore, I figure that there might be some utility available for either the Mac or the iPad that will search for deleted files and attempt to resurrect them.
Any ideas on the availability of such a utility?