Who is the Bad Guy?
In Night's movies his total cleverness in "twisting" the viewer generally ensures 2 things - the Bad Guy is not what you figure based on simplistic addiction to normal Hollywood Blockbusters, and SO Night kills him.
He adds a lot of clues for the impressionable in his DVD extras so be sure to take a look, eg for The Happening he just happens to mention "by the way, WE are the bad guys" although clues like "Clearhill Estate, you DESERVE this" should have sufficed.
But back in 1999 he was a bit more cautious [Kubrick like] about actually explaining his plots so he never explained that Malcolm [and the shrink parasites he represents] is the Bad Guy, but he DOES kill him [via one of his victims] so that should have been sufficient.
In DVD he expressed his great surprise that he needed to actually EXPLAIN his "twist" [after Cole tells him his story must have a twist] so Night must have been super surprised most of the viewers took Malcolm to be the GOOD guy, but when the dollars flooded in I guess he figured what the whack.
But I am sure it changed his approach in other movies to see just how far he could GO in ridiculing J Doe, hence the reaction against The Happening as being a bit over the top in satirizing an American favorite activity - suicide.
http://www.kindleflippages.com/ablog/