It's difficult not to be fond Tim Burton's big-budget 50's sci-fi spoof Mars Attacks (1996).
The lead actors were clearly having a real laugh whilst making this, with hilariously cheesy over-acting and some great one-liners. Amid the mayhem, you don't really care what happens to most of these characters anyway, most of whom come to a gory end, but towards the end of the film, you'll want to get in there yourself to sort out the vicious little Martian creeps.
The admittedly shaky plot is pretty secondary to the excellent visual effects, and there is an eery 50's-esque score underlying the whole film, which is a good touch.
The scheming, skeletal aliens have a genuinely nasty look about them, whilst also coming across as quite comic, and go about their murderous human annihilation / experimentation with a twisted glee. In fact they are the most unsympathetic aliens to have graced our movie-screens since H R Giger's ultra-aggressive 'Alien' back in 1979.
The 50's B-Movie cliches are used to full-effect, with body-pulverising ray guns, saucer-shaped spacecraft and large-brained/puny-bodied aliens running riot throughout.
You just cannot take Mars Attacks too seriously (as did the producers of Independence Day in the same year), so if you'd like to see half the US Presidential Administration and Chiefs of Staff wiped-out within 90 minutes, this is your movie !