Nobody's saying it's a crap film, but to laud it as the best film ever (probably) is just pushing it about nineteen parsecs too far! As people here have said, this is a HW Blockbuster, which by their very nature usually don't have too much depth, as they rely mostly on the big names in them and the special effects.
My own favourite pictures, none of which I would put forward as the best ever, are
The odd couple (Lemmon + Matthau = Genius!)
Some like it hot (Lemmon + Matthau + Monroe = TOTAL Genius!)
The Last temptation of Christ
The usual suspects
Dark Star
Silent running
Born on the fourth of July
Star Trek II: the wrath of Khan
The Matrix (the original one)
Casablanca
Mississippi burning
Unforgiven
Memento
Identity
All I can think of at the moment