However, in my opinion, there are no objective reasons for establishing a definite list.
This brings something to my mind: What are my favourite films? And, by the way, What are my students' favourite films?
I've been thinking for a long time and I've already taken a very hard decision: My top 5 films.
1. Psycho. Hitchcock's masterpiece is great. A young woman steals $40,000 from her employer's client, and subsequently encounters a young motel owner who is under the domination of his evil mother.
2. Braveheart. William Wallace fights for freedom against the English tyranny. Far better than the Lord of the Ring and with highly impressive moments.
3.A Bronx Tale. A father becomes worried when a local gangster befriends his son in the Bronx in the 1960s. Robert De Niro is probably one of my favourite actors.
4. Full Metal Jacket. A great story about the hard psychological effects of the Vietnam War. Stanley Kubrick at his best.
5. Forrest Gump. Forrest Gump, while not intelligent, has accidentally been present at many historic moments, but his true love, Jenny, eludes him.

So, this is probably my final list. However, many other great works have been left behind such as Big Fish, The Grapes of Wrath, Rocky.
What about you? I'm sure you must have a really different opinion about good films.
Which are your favourite films?