I went into Legion with nothing but a synopsis to go by, and not a lot of hope... er, faith. But the movie exceeded those low expectations. Not great, but pretty good for what it is... a sort of fantasy-horror movie with a bit of a religious slant to it.
There is a definite Stephen King vibe here, though Legion manages much more successfully than most King film adaptations. This got freaky and gory only occasionally, and maintained a fairly creepy, foreboding atmosphere throughout. Fine visual effects supported the fantastical story. I found humour in the fun craziness and actually laughed out loud at non-funny scenes... that's not a bad thing; I was just enjoying myself... honest.
Quaid heads a pretty good cast in this tale of the apocalypse. In a nutshell: Archangel Michael falls to Earth, removes his wings, and sets out to protect the young mother whose unborn child will become humanity's last hope. Then shit gets real.