User-generated fibbery
Ken Otterbourg, managing editor of the Winston-Salem Journal (where I was working before I came to Denver), has a tale of an awesome photo of the lunar eclipse that a reader submitted:

A reader submitted that photo, which looks great. But, when the photo editor was readying it for print, well, the image told a different story:

Read the full story at Otterblog.
Related: Hackzine posts on how to detect forged photos algorithmically. Also, Ken Otterbourg wrote a part-two to his eclipsed post.