In case anyone didn't know, there was some backwards speech in the Room 23 scene.
http://youtube.com/watch?v=gwWhM8Xb_oQ
In white (though not really a spoiler):
<font color="white">When played backwards there is a voice that keeps repeating "Only fools are enslaved by time and space" </font>
You can find a comeplete list of the images shown on screen here:
http://www.lostpedia.com/wiki/Room_23
It's interesting that right when they left the pictures started becoming positive as the phrase "ANOTHER WAY" appears and then fireworks, followed by one of the Dharma guys.....guess they should stuck around and seen what was next..