Benhur, Life is Beautifull and some of Hitchcock movies.
Sorry for beeing too Classic
.
The matrix, as science and special effect really great, but that's all. If I have to choose between Terminator and The Matrix, I would choose Terminator.
If i would choose by genre I would vote as follows:
Comedy Can decide, almost every movie of Chaplin and Abbot & Costelo
Action Commando/First Blood/Face Off (altought some really fiction)
Science-fiction Terminator/Alien/Starwars Trilogy
Adventure Dr No a classic for me started it all
Suspense Psycho
Horror Night of the Living Dead (the original one 1968)
Musical The sound of Music/Grease
Drama Benhur/Life is Beatyfull (altought seen as a comedy it's a drama)
Westerns The Good the Bad and the Ugly
Cheers,
El_Matador
PS: on all genres there are more great movies those are the first that came to my mind (the first one you think is the one you always consider the best)