Do you guys remember the baker who would stumble and drop all his cakes on those experimental Sesame Street shorts?
Well thats the way I see M Night's films. I got to see Signs a few weeks ago for an advance screening, and had the same thought I did with unbreakable. Master precision pacing, great tense mood and score, great buildup...then boom! In the final 10 minutes...its like the great tiered masterpeice cake he makes...well the great baker ends up at the last step tripping and ruining the whole thing. Even after a third way through I didnt think he could possible mess up somthing this good...then boom! Right when ya think this is Oscar worthy with just 8 minutes to go, it turns into a freaking b movie that Ed Wood himself would be proud of. (ie: the scene after Mel gibson brings the tv back into the living room...my I never imagined how cheesey it would get after that)
Gosh...I liken it to a great game winning yardage run in the final seconds of the super bowl, only to get sacked or fumble just a yard from the goal line.