When Jin is in Room 23 on Hydra Island, he watches the DHARMA brainwashing video and sees this image. A COMPACT FLUORESCENT LIGHT BULB??? From looking it up on the interwebs, I discovered this was already old info seen before and included in DVD extras.
Unlike everything else in the video, this looks post 90s and therefore NOT the DHARMA era. Weird, no? Does this mean some tampering with a little help from the Others?