Bad list, bad list, you missed Hana-bi.
And as italian I am outraged because you missed La vita è bella (Life is beautiful).
You also missed my favorite comic movie of all time but it was expected, pretty much unknown outside Italy and hard to understand for non-Italians.
Other missed that maybe someone liked and want to see in the top 20: Jackie Brown, Full Monty, The Postman, The Cube, Event Horizon, The Jackal, The Lost World, Scream 2, Nirvana, Dante's Peak, Devil's Advocate, Amistad, G.I. Jane (in the bad list).
There's a third Home Alone??
Yep.
But it's not bad, if you're a kid you like it.
Another good in the bad list is Con Air, tons of bullets, fights, explosions, cool guys, the bad guy is John Malkovich, Nick Cage with long hairs, Steve Buscemi is a psychopath, they destroy everything, it's a cool action movie.
My vote is for Mortal Kombat: Annihilation, really embarrassing, at least Batman and Robin has Arnold in the role of Mr. Freeze.