Lot of impatient people round here. We already had Anna Lucia's background, plus all the main characters last year. Now it was Eko's turn, relax people!
So now Locke and Eko have stared down the 'monster', and have both been spared. Obviously there is a similarity between Locke and Eko, both 'men of faith'. The images caught within the smoke are interesting, hopefully somebody isn't pulling a photoshop prank on us(no offense intended Baby Lee). If it's legit, then the monster has some mindreading capacity, kinda related to The Others who only took the good people, they just know.
Any input on the last line from the computer? "You need to com", before we got cut off. Wasn't sure that last character was an "m" or "n" either. "You need to come get me" perhaps?