"Inside A U.S. Election Vote Counting Program"
dissects the Diebold voting kiosk software (used in 37 states) and presents some evidence that it intentionally keeps two sets of books -- one in which the votes are recorded, and one from which the results are generated -- in order to intentionally facilitate fraud.
You might look at it like this: Suppose you have votes on paper ballots, and you pile all the paper ballots in room one. Then, you make a copy of all the ballots and put the stack of copies in room 2.
You then leave the door open to room 2, so that people can come in and out, replacing some of the votes in the stack with their own.
You could have some sort of security device that would tell you if any of the copies of votes in room 2 have been changed, but you opt not to.
"The Truth About the Rob-Georgia File" (same author) has an interview with one of the folks who was responsible for deploying this system, who tells a story that lacks basic security measures in just about every way you can imagine. This story pretty well undermines the first story, since clearly this company couldn't find its ass with both hands: they don't sound smart enough to rig an election.
It is somewhat suspicious that the author of these two articles is also hyping his own book on the topic. But here's the (less accusatory, but also far more vague) take on it from EFF and NYT.
"Glowing mice: A fluorescent mouse family, provided by the Level Biotech, a transgenic company, is displayed inside a box during the Bio Taiwan 2003 at the World Trade Center in Taipei. The mice were implanted with the green fluorescent gene into the mice embryo combining genetic engineering and transplantion technology. (AFP/Sam Yeh)"
(However, I remain skeptical as to whether they actually look like this, or there is camera/lighting trickery involved. Have any of you ever see a glow-critter and a human in the same photo?)