If the ultimate goal is entertainment, then Lady in the Water enthusiastically rises to the task. In a movie laden with enough symbolism, shamanism and mythic lore to make Joseph Campbell dance a tribal jig, Shyamalan never forgets to have fun.
Lady in the Water feels very much like something its author made up as he went along; and, if it weren't so damn weird, it would most certainly put you right to sleep.
The result is a soggy swamp of nyah-nyah-nyah-nyah-nyahing, its only grace notes are Giamatti's fine, nuanced performance as Heep and Christopher Doyle's handsome cinematography.
It's as if on some semiconscious level, Shyamalan, who I do not doubt is a serious and self-serious pop-creative original, is calling his own success into question and daring his audience to gulp down larger and spikier clusters of manure, just to see if they will. Or he's lost his mind.