Mars Attacks! (1996, Tim Burton)
Had forgotten how sneakily nasty this actually is. Easily a higher body count than Braddock and The Burning combined
Ahem. Burton's tribute to 50s SF is still a goer imo. And absolutely NO whimsy.
Humanoids From The Deep (1980, Barbara Peeters*)
Would that it be possible to see the original film before Corman "sexed" it up* cough .... but then I've always hankered after the original Fog for the same reason.
Regardless ... half eco warning/half monster movie aint too bad ... the bad guys are bad (headed by Vic Morrow at his most bull headed) and Doug McClure captains the good guys.