Hi All,
I was having a look on the Channel 7 website and i found a series of secret clues for each episode that are really interesting.
http://au.yahoo.com/lost/clue/clues301.html

I wont list all 11 of the secret clues (Aus is way behind the US) here but they include:
Transcript of conversation between Mikhail and Klugh before he killed her
Showing us what the others are building (why sawyer & kate were breaking rocks)
Where Radzinskys body ended up
Clue about the brainwashing room that Karl was found in

Some of them made me go "i cant believe i missed that!"

Enjoy!