Worst SF/F covers of all time?

There's an amusing article on Cracked.com about what one writer thinks are the worst sf/f covers of all time.

At some point I'll talk about covers in more depth--we're planning a number of posts on this, including interviews with artists and pieces from the art director, etc.)--but check out the link for your amusement in the meantime. (However, I do agree with the comments that there are many that are much worse, from both way back and more recent times...)

Diana