Everybody got that? No problems in understanding? So, metaphorically speaking, why the hell kick a donkey for being a donkey?! Would you order a lasagne from a restaurant and then complain because it wasn't a curry? Okay, metaphors over, hopefully my point is grasped: a sci-fi TV movie starring Dean Cain is what it is. It's not got loads of money for effects and box office smash cast lists. It's intended to provide lightish entertainment for people relaxing in their own homes and looking to kill an hour or two.
For once, why can't we just judge a film on what it is? Let's try it...
Dean Cain makes a likable good guy and at least tries to rid himself of Superman's clean shaven and impregnable heroism.
Joanna Taylor works well as a waspish tough girl and then **SPOILER** manages to successfully present another character development reasonably convincingly.
The effects are not great but successfully convey their intent.
There are things that happen that avoid the usual need to give absolutely everyone and everything a happy ending.
TV Movies like this NEED to be made because if everything was Michael Bay then film-making would be moribund, if not completely, officially dead! Post Impact is a low-budget and derivative sci-fi disaster movie featuting television actors. Does it succeed within those parameters? Yes, it does.